Abstract: A muzzle device and blast sleeve system that includes a muzzle device having a muzzle device borehole, one or more venting apertures extending between the muzzle device borehole and an outer surface of the muzzle device, grouped venting apertures with at least one venting trough extending from or through each venting aperture to a muzzle device first end, and at least one screw recess; a blast sleeve having a blast sleeve borehole extending therethrough, wherein the blast sleeve borehole matingly corresponds to and allows for frictional engagement between the outer surface of the muzzle device and the inner blast sleeve sidewall of the blast sleeve borehole, and one or more venting ports formed through the blast sleeve to be aligned with at least two of the venting apertures; and an anti-rotation screw, positionable through the screw aperture and at least a portion of the screw recess.

Abstract: A firearm suppressor with a recoil booster may be provided. In one example, the suppressor may include a housing, a back end member coupled to the housing, and a recoil booster coupled to the back end member. The recoil booster may be configured to couple to a firearm. The recoil booster may include a coil spring, a rear cap coupled to the back end member, and a piston configured to slide relative to the rear cap. The rear cap may include a main body at least partially disposed within the back end member and including a first bearing surface to receive a first end of the spring and a flange extending forward from the main body and maintained within an inner circumference of the spring. The piston may include a second bearing surface configured to receive a second end of the spring. Additional embodiments and related methods are provided.

Abstract: A suppressor has a suppressor body extending from a proximal end portion to a distal end plate. The suppressor defines an inner chamber with a plurality of baffles and a plurality of outer chambers located radially outside of the inner chamber between the suppressor body and an outer housing. An integral flash hider is located in the distal end portion of the suppressor and exits through a central exit opening in the distal end plate. The outer chambers are largely isolated from the inner chamber and evacuate semi-independently from the inner chamber.

Abstract: The present invention is of a muzzle device that is either permanently fixed or releasably attached to the end of the barrel of a firearm. The muzzle device may have a configuration that reduces the loss of pressure and flow rate of the propellant gas by employing a central bore having approximately the same diameter as the bore of the barrel. The muzzle device may further have apertures with inserted adjustable screws with hollow interior portions for tuning the degree of propellant gases in various directions away from the muzzle device. The external diameter of the muzzle device may also have substantially the same diameter as the external diameter of the barrel to allow for access to firearm components without having to remove the muzzle device from the end of the barrel.

Abstract: A firearm barrel configured to attach to a muzzle device including a muzzle device bore and a tapered interior surface tapering from a first, wider portion at a proximal end of the muzzle device to a second, narrower portion away from the proximal end. The firearm barrel includes a barrel bore, a first, proximal end, a second, distal end, and a tapered exterior surface tapering from a first, wider portion to a second, narrower portion towards the distal end of the barrel, wherein the tapered exterior surface is configured to operably mate with the tapered interior surface of the muzzle device to optimize axial alignment of the barrel bore with the muzzle device bore.

Abstract: A flexible fit, easy to attach and align, firearm adapter that allows secure fitment of a muzzle device, such as a suppressor, to a broad range of firearm sizes and shapes, with a single device. These firearms would include difficult to fit barrel profiles that in many cases would go unsuppressed without this improvement over the prior art. An embodiment includes an anchor securable to a smooth section of a firearm barrel and a housing adapted to engage the anchor. The anchor and housing are sized to reach over or around barrel obstructions. An embodiment includes an alignment guide to bring the barrel into axial alignment with the muzzle device.

Abstract: A universal firearm shield adapted to attach to a firearm suppressor. Suppressors fail to dampen all of the effects of firearm discharge, leaving behind residual effects that may be noticeable. The shield dampens the residual effects of firearm discharge that are not captured by the suppressor. The residual effects are captured by the shield and dispersed throughout one or more interior chambers. The shield easily, quickly, and securely couples to suppressors of varying geometries due to the slidably adjustable components of the shield. The shield is configured to surround the suppressor and axially align with the suppressor. As such, the muzzle of the firearm axially aligns with the shield, the suppressor, and the barrel for an unobstructed projectile path during discharge.

Abstract: A silencer for a firearm in one embodiment includes an outer tube defining a proximal end configured for mounting on a firearm barrel, a distal end, and an internal passageway extending between the ends. A plurality of first baffles is disposed in horizontally stacked relation in the internal passageway between the proximal and distal ends of the tube. The first baffles each comprises an annular mounting sleeve and a cone projecting axially rearward from the sleeve towards the proximal end of the tube. The cone defines an oblong obliquely angled central opening concentrically aligned the bore of a firearm barrel for receiving a projectile therethrough. Gas expansion chambers are formed between the first baffles. The cone may have an asymmetrically skewed shape for cross-jetting. An anti-rotation feature is provided which prevents the silencer assembly from loosening when the silencer is coupled to the firearm barrel.

Abstract: A firearm adapter that attaches a muzzle device, such as a suppressor to a broad range of firearm sizes and shapes. The adapter can securely attach and align a suppressor to a wide range of barrel diameters and profiles, including, those barrels with various obstructions, protrusions and geometries. An embodiment of the device reaches over or around barrel obstructions to securely attach a housing to an anchor on an unobstructed section of the barrel and further compresses an alignment surface against the muzzle to create longitudinal and concentric alignment between the barrel and the suppressor.

Abstract: A gun standoff device may include an elongated body having crenulations at a first end and an attachment mechanism at a second end. The crenulations at the first end may provide a plurality of radially disposed teeth about the circumference of the first end. The attachment mechanism may allow attachment of the elongated body to a gun barrel, a gun magazine, or other gun component.

Abstract: A firearm barrel fitment sleeve and method of use. The fitment sleeve is preferably fast-attaching, self-aligning, and securable without the need of a tool. The novel fitment sleeve allows a single firearm accessory adapter to be used with a wide range of firearm barrels by temporarily modifying the size of the barrel diameter without permanently modifying the structure of the firearm. The fitment sleeve is inexpensive and preferably includes a longitudinally extending slot in the lateral wall making a single fitment sleeve usable on a wide variety of barrel diameters. Additionally, the fitment sleeve is heat resistant to avoid melting and/or catching fire when the barrel increases in heat during operation.

Abstract: A muzzle device and blast shield. The muzzle device includes a body portion having a central borehole, and wherein the body portion comprises a plurality of prongs defined between longitudinally extending slots formed in the body portion and porting apertures, wherein the porting apertures provide fluid communication between an exterior of the muzzle device and at least one longitudinally extending slot. The blast shield includes a body portion having a central borehole, wherein the body portion comprises a couple portion having an internal cavity, a barrel extension portion extending into at least a portion of the internal cavity, and a plurality of porting apertures, wherein the porting apertures provide fluid communication between an exterior of the blast shield and the internal cavity.

Abstract: A silencer for a firearm in one embodiment includes an outer tube defining a proximal end configured for mounting on a firearm barrel, a distal end, and an internal passageway extending between the ends. A plurality of first baffles is disposed in horizontally stacked relation in the internal passageway between the proximal and distal ends of the tube. The first baffles each comprises an annular mounting sleeve and a cone projecting axially rearward from the sleeve towards the proximal end of the tube. The cone defines an oblong obliquely angled central opening concentrically aligned the bore of a firearm barrel for receiving a projectile therethrough. Gas expansion chambers are formed between the first baffles. The cone may have an asymmetrically skewed shape for cross-jetting. An anti-rotation feature is provided which prevents the silencer assembly from loosening when the silencer is coupled to the firearm barrel.

Abstract: An integrally suppressed barrel in one embodiment includes a rear barrel portion defining an axial projectile bore and forwardly extending sleeve affixed to thereto. The sleeve includes vertically stacked tubular upper and lower longitudinal chambers holding a complementary configured horizontal stack of sound suppression baffles. The chambers are in fluid communication via a waist, which may be smaller in width than the chambers. A rod extending from a front end cap on the sleeve to and threadably the rear barrel secures the baffles inside the sleeve. The stack of baffles is removable from the sleeve as a self-supporting unit in one embodiment. The baffles may include upper and lower chambers which are in fluid communication to provide additional volume for gas expansion and sound suppression. The upper chambers include an asymmetrically shaped flow cone configured to direct gas from the upper to lower chambers.

Abstract: A system and method for a combination flash hider and muzzle brake. The flash hider is upstream of the muzzle brake. This allows the flash hider to take priority over the muzzle brake. The flash hider has slots allowing the exhausting gas to exit, causing the exhaust gases to decrease temperature and pressure to a point below the flash point. This reduces flash. The muzzle brake has at least one port.

Abstract: This invention is directed to muzzle devices for firearms and, in particular, to muzzle brakes and compensators (“Muzzle Devices”). More specifically, but without restriction to the particular embodiments hereinafter described in accordance with the best mode of practice, this invention relates to a concussion reducing device (“CRD”) associated with said Muzzle Devices.

Abstract: A gun standoff device may include an elongated body having crenulations at a first end and an attachment mechanism at a second end. The crenulations at the first end may provide a plurality of radially disposed teeth about the circumference of the first end. The attachment mechanism may allow attachment of the elongated body to a gun barrel, a gun magazine, or other gun component.

Abstract: Devices, systems, and methods for adding a coupling system onto the existing accessory thread on a rifle barrel, which allows for existing terminal muzzle devices (such as but not limited to muzzle brakes, flash hiders, muzzle suppressors, and the like) to remain on the barrel and not be removed when accessory devices, such as but not limited to silencers, percussion shrouds, golf ball launchers, tennis ball launchers, cartridge oil filters, and the like, are used with threaded gun barrels.

Abstract: A muzzle brake attachment for a firearm. The muzzle brake utilizes an inner perforated tube approximating or slightly larger than the bore diameter of a firearm barrel, and an un-perforated or substantially un-perforated outer shield tube. The muzzle brake substantially routes exhausted propellant gases out of the forward end of the muzzle brake, effectively controlling felt recoil while stabilizing the muzzle.

Abstract: Embodiments of a light-enhanced firearm suppressor are disclosed herein. According to various embodiments, the light-enhanced firearm suppressor can include a housing. The housing can include an outer surface, an inner cavity, and an attachment mechanism that attaches the housing to a barrel of a firearm. The inner cavity can accommodate a baffle. The light-enhanced firearm suppressor also can include a lighting attachment. The lighting attachment can include a power source and a lighting mechanism.

Abstract: The present disclosure relates to a suppressor for use with a weapon. The suppressor may be formed to have a body portion having a bore extending concentric with a bore axis of the weapon barrel. An opening in the bore extends at least substantially circumferentially around the bore. A flow path communicates with the opening and defines a channel for redirecting gasses flowing in the bore out from the bore, through the opening, into a rearward direction in the flow path. The flow path raises a pressure at the opening to generate a Mach disk within the bore at a location approximately coincident with the opening. The Mach disk forms as a virtual baffle to divert at least a portion of the gasses into the opening and into the flow path.

Abstract: A firearm muzzle silencer includes an elongated cylindrical body having a cylindrical bore, a firearm mounting end, and a projectile discharge end. At least one helical insert is positioned in the cylindrical bore and proximate to the firearm mounting end. The helical insert has an insert axial bore that extends through the helical insert and a spiral groove formed on an exterior of the helical insert to define a spiral path between the helical insert and the cylindrical bore. A chamber is defined in the elongated cylindrical body adjacent to the helical insert, and the helical insert is positioned between the chamber and the firearm mounting end. A plurality of ports is formed in the elongated cylindrical body adjacent to the spiral path, wherein the plurality of ports is in communication with the chamber via the spiral path.

Abstract: Disclosed are several examples of apparatuses for suppressing the blast and flash produced as a projectile is expelled by gases from a firearm. In some examples, gases are diverted away from the central chamber to an expansion chamber by baffles. The gases are absorbed by the expansion chamber and desorbed slowly, thus decreasing pressure and increasing residence time of the gases. In other examples, the gases impinge against a plurality of rods before expanding through passages between the rods to decrease the pressure and increase the residence time of the gases.

Abstract: An interchangeable, modular firearm muzzle mountable system can include a first firearm muzzle mountable device and a second firearm muzzle mountable device. Each device can have an inlet end coupling feature proximate to an inlet end of a central chamber and an outlet end coupling feature proximate to an outlet of the central chamber. The central chamber can be oriented along a central axis within an outer shell and the inlet and the outlet can be configured to allow a projectile from a firearm to pass along the central axis. The inlet end coupling feature of the first device can be removably coupleable with a muzzle end of a firearm and the inlet end coupling feature of the second device can be removably coupleable with the outlet end coupling feature of the first device beyond the muzzle end of the firearm.

Abstract: A flash suppressor adapted to be attached to a muzzle of a barrel of a firearm coaxially therewith, the flash suppressor having a base, a tapered waist portion and a shoulder surface. The flash suppressor further having a plurality of tines, in which each tine of the plurality of times has a different mass to affect sound reduction as a result of expanding, and combusting gases exiting the muzzle of the firearm when the firearm is discharged.

Abstract: A flash suppressing and recoil compensating muzzle device for use with a firearm provides a muzzle device that reduces recoil and inhibits muzzle flash while preventing audible harmonic resonant ringing after the firearm is discharged. The present invention accomplishes this through the use of an open ended muzzle device that redirects a portion of the high velocity gasses exiting the terminal end of the weapon through asymmetrically placed narrowing exhaust openings. The asymmetrically placed narrowing exhaust openings gradually direct exiting gases to the rear and to the sides of the muzzle in order to reduce recoil and reducing light emissions. The narrowing exhaust openings are formed by the radially positioned prongs of a distinct weight and width, which widen from the proximal to distal end of the muzzle device. The weight and mass disparity between prongs prevents audible ringing by reducing resonant vibrations between neighboring prongs.

Abstract: A muzzle brake cover for providing blast diversion for firearms which include an extension for attachment on an end of a muzzle brake or flash suppressor. The extension can have a cylindrical inner surface of an inner diameter larger than that of the extension outer diameter of the muzzle brake or flash suppressor, concentric rings extending around the cylindrical inner surface, a threaded portion, a smooth portion disposed between the concentric rings and the threaded portion for fitting over portions of the muzzle brake, and a collar comprising a plurality of tightening surfaces for allowing quick tightening of the muzzle brake cover.

Abstract: A noise suppressor system for attachment to a firearm including a barrel having a longitudinal axis. The noise suppressor system including the combination of: a flash suppressor adapted to be attached to the muzzle of the barrel coaxially therewith, a noise suppressor including a proximal mount assembly having a bore for coaxially receiving the flash suppressor, and a means for selectively securely coupling the noise suppressor system to the firearm.

Abstract: A muzzle device for simultaneously mitigating the four major physical effects caused when a projectile is fired; muzzle climb, concussion, and recoil without an increased muzzle flash signature is provided. The muzzle device can include a cylindrical body defining an expansion chamber and can include a securing mechanism arranged at a proximal end and an end wall arranged at a distal end. An opening sized for a projectile can be arranged in the distal end wall. At least one distal tuning vent can be arranged in the distal end wall about the opening. A plurality of radial exhaust vents can be arranged through a cylindrical wall of the cylindrical body. The expansion chamber can define a fixed volume and the tuning and exhaust vents can define an open area. A ratio between the fixed volume and the open area can be about 0.6 to 1 to about 0.9 to 1. A method of tuning a muzzle device is also provided.

Abstract: A firearm discharge gas flow control device can comprise a first gas chamber fluidly connectable to a muzzle end of a firearm to allow a projectile to pass through and to receive a first portion of a discharge gas generated by firing the projectile. The device can also comprise a second gas chamber fluidly isolated from the first gas chamber and fluidly connectable to the muzzle end of the firearm to receive a second portion of the discharge gas, the second gas chamber having a flow control barrier to modify a flow of the second portion of the discharge gas.

Abstract: An interchangeable, modular firearm muzzle mountable device can include a central chamber oriented along a central axis within an outer shell. The central chamber can have an inlet at an inlet end and an outlet at an outlet end to allow a projectile from a firearm to pass along the central axis. The device can also include an inlet end coupling feature proximate to the inlet end, to removably couple with a muzzle end of a firearm. Additionally, the device can include an outlet end coupling feature proximate to the outlet end, to removably couple with a secondary firearm muzzle mountable device beyond the muzzle end of the firearm.

Abstract: A suppressor mechanism has an elongate tubular housing containing baffles and into which is assembled a suppressor mount body having spaced thread sections and spaced tapered gas seal surfaces. An adapter/muzzle brake member defines an internally threaded section that establishes threaded connection with the reduced diameter externally threaded section of a typical firearm barrel that is prepared for attachment of a suppressor thereto. The suppressor mount body and the muzzle brake/adapter member each define spaced threaded sections that establish threaded connection and promote enhanced structural integrity. The spaced internal tapered surfaces of the suppressor mount body and the spaced external tapered surfaces of the muzzle brake/adapter member establish spaced internal cartridge gas seals that prevent high pressure hot cartridge gas and gunpowder residue from coming into contact with and potentially fouling the thread connections of the suppressor mount body and the muzzle brake/adapter member.

Abstract: A coupling system attaches a device such as a blank adaptor or a sound suppressor to the flash hider of a firearm. The device is slid over the flash hider until a set of flat surfaces on it are aligned with a set of holes in the device. Camming latches are held in the holes in the device. The collar carried by the device is then threadably advanced to a locking position with respect to the device where it presses the camming latches into secure engagement with the flat surfaces on the flash hider. Unthreading the collar to the unlocked position allows the camming latches to be moved radially when the device is to be removed or rotated. A spring lock prevents the collar from rotating during use, particularly during firing of the firearm but may be released to rotate the collar between locked and unlocked positions.

Abstract: A flash hider, a sound suppressor and a quick-disconnect coupler that holds the sound suppressor to a flash hider is disclosed. The quick-disconnect coupler enables the suppressor to be attached to the flash hider so that the hider forms a nozzle at the entrance to the sound suppressor to facilitate the operation of the suppressor. The coupler includes a collar that threads to the first part of the suppressor over plural holes formed therein. Camming latches set in these holes are held firmly against flat surfaces on the exterior of the flash hider by the collar. A spring lock holds the collar against rotation until it is released.

Abstract: A flash hider has a central bore for receiving the barrel of a firearm at one end and three tapered tines at the opposing end with a gap formed between each pair of adjacent tines. Just past the muzzle-seat in the central bore is a flared entrance leading to the gaps thereby allowing hot air and combustion gases to expand radially through the gaps between the tines, thereby cooling the hot air and gases. The lateral faces of the tines are stepped to cause turbulent mixing of the cooler air surrounding the flash hider with the exiting gases so as to further expand and cool in order to prevent re-ignition and thereby reduce secondary flash. Long tines help to hide all but direct viewing of primary flash.

Abstract: A firearm barrel that reduces muzzle climb and recoil by tapping a portion of the discharge products near the breech and venting them toward the muzzle end of a firearm. Some discharge products have also have an upward component to reduce muzzle climb, some have a downward or sideways component to lessen the effect of the upwardly directed discharge products on a top mounted accessory such as a telescopic sight.

Abstract: The invention relates to rifled and smoothbore firearms and can be used in barrel-mounted devices for firing in the air and in the water. The inventive barrel-mounted device for firearms comprises a unit for joining to the barrel, a cap and a starting part with gas vents. The starting part bore is the continuation of the barrel bore, and there are N?1 compartments formed between the casing and the starting part. Each compartment includes at least two gas vents and provides the possibility of gas exhaust from the starting part bore to the compartment through the first of the mentioned gas vents and gas exhaust from the compartment to the starting part bore through the second gas vent. The compartment length is 0.5-3.0 of the bore caliber and in the cross-section plane of the barrel-mounted device the minimal cross-section area of N?1 compartments, designed for the gas flow between gas vents, ranges within 0.4-4.5 of the barrel bore area.

Abstract: An exhaust reflector for cooling and reducing the velocity of firearm, internal combustion engine, and other exhaust gases, and controlling the dispersion of exhaust debris away from the operator.

Abstract: There is provided a flash suppressor for use with a firearm to attenuate muzzle flash. The flash suppressor can be used in conjunction with attachments, and provides mounting and alignment means therefore. In an embodiment, the flash suppressor comprises: a generally cylindrical body having a longitudinal axis, a muzzle end, and an exit end; a passage extending through the body and along the longitudinal axis; and a set of apertures. The passage includes: a mount portion for mounting the flash suppressor to the firearm muzzle; a transition portion; an intermediate portion; and a truncated conical portion having a diameter that increases toward the exit end. The transition portion joins the mount portion and the intermediate portion, and the intermediate portion joins the transition portion and the truncated conical portion. The apertures extend through the body of the flash suppressor and into the truncated conical portion, and channel propellant gases.

Abstract: A Controlled Unaided Surge and Purge (CUSPS) suppressor for firearms uses the blast and plume characteristics inherent to the ballistic discharge process to develop a new two-step controlled surge and purge system centered around advanced mixer-ejector concepts. The blast surge noise is reduced by controlling the flow expansion, and the flash effects are reduced by controlling inflow and outflow gas purges. In the preferred embodiment, suppressor vent holes are convergently contoured to better reduce the blast surge. Preferably a two-stage supersonic mixer/ejector system, in combination with adjacent vent holes in the suppressor housing and a divergent entrance nozzle, is used to control or eliminate the external Mach disk, while rapidly mixing and diluting the propellant with purged gases. A diffuser downstream of the mixer/ejector system further increases ejector performance and pumping. The pumped gases are used to self-clean and cool the CUSPS suppressor.

Abstract: A locking device mountable to a rifle flash hider having grooved and flat portions. The locking device includes a body portion having an end, a bore and at least two undercut slots located in the end. At least two locking tabs are slidably engaged in the undercut slots, the locking tabs having a mounting hole and flat and arcuate confronting surfaces. An endcap is engageable with the body, the endcap having a central opening and at least two eccentric slots. At least two guide pins are located within the eccentric slots and engaged with the corresponding locking tab mounting holes. The locking tabs slidably move within the undercut slots in the body towards and away from the endcap opening when the endcap is rotated, thereby engaging and disengaging a flash hider having corresponding flat and arcuate portions.

Abstract: An improved barrel and attachment system for rapid fire weapons having a quick release and replacement. Further the barrel is lighter than comparable barrels for the same purpose, and has a flash suppression system.

Abstract: Apparatus and methods for easily, quickly and reliably longitudinally securing and rotationally locking a noise suppressor or other auxiliary device to the muzzle end of a firearm barrel, and to a fixture such as a flash suppressor affixed to the muzzle end of the firearm, and for easily, quickly and reliably removing the noise suppressor or other auxiliary device therefrom.

Abstract: Flash suppressors having novel expansion features are disclosed. In one embodiment, a suppressor includes an attachment portion adapted to attach to a gun barrel, and a suppressor portion coupled to the attachment portion. The suppressor portion has a suppressor bore that is adapted to be aligned with a longitudinal axis of the gun barrel to allow a projectile from the gun barrel to pass therethrough. The suppressor bore is defined by at least one bore surface having at least one expansion groove disposed therein. The expansion groove may be partially-circumferentially disposed about the suppressor bore, or may include a plurality of expansion grooves. In another embodiment, a flash apparatus includes a suppressor portion having a plurality of longitudinally elongated members spaced apart about a circumference of the suppressor bore, each member being separated from adjacent elongated members by a longitudinal slot, at least one longitudinal slot having non-parallel sidewalls.

Abstract: At least one exemplary embodiment is directed to a flash suppressor comprising at least one gas channel where a portion of the gases exhausted from a barrel when a projectile is emitted is directed into the at least one gas channel, where the at least one gas channel has a channel axis that is at a non-zero angle with respect to a bore axis, and where the at least one gas channel directs a gas portion to an ambient environment surrounding the flash suppressor.

Abstract: A shotgun gas exchanger comprising a gas exchanger tube for connectively engaging with a shotgun barrel and a choke disposed in the gas exchanger having longitudinal axial channels on the exterior surface thereof, such that gas from the shotgun barrel flows through the longitudinal axial channels and gathers in front of the muzzle end of the choke to retard the release of pellets from a wadding cup exiting the muzzle.

Abstract: Flash suppressors having novel expansion features are disclosed. In one embodiment, a suppressor includes an attachment portion adapted to attach to a gun barrel, and a suppressor portion coupled to the attachment portion. The suppressor portion has a suppressor bore that is adapted to be aligned with a longitudinal axis of the gun barrel to allow a projectile from the gun barrel to pass therethrough. The suppressor bore is defined by at least one bore surface having at least one expansion groove disposed therein. The expansion groove may be partially-circumferentially disposed about the suppressor bore, or may include a plurality of expansion grooves. In another embodiment, a flash apparatus includes a suppressor portion having a plurality of longitudinally elongated members spaced apart about a circumference of the suppressor bore, each member being separated from adjacent elongated members by a longitudinal slot, at least one longitudinal slot having non-parallel sidewalls.

Abstract: The present invention relates to a silencer for reducing muzzle blast and noise of firearms or similar devices. The present silencer has a hollow cylindrical or other shape casing comprising front and rear end caps and an opening aligned along a longitudinal axis defining a passage for a projectile and propellant gases to emerge from the muzzle opening. A plurality of serially placed baffles of symmetrical or slanted orientation and intervening coaxial spacers are positioned within the casing and define a multitude of chambers among the baffles, spacers, and outer housing. The baffles shear propellant gases away from the projectile path and through openings or ports into additional chambers formed between the spacers and outer housing. The arrangement of baffles and spacers provides flow-impeding paths, dispersion, and controlled expansion of gases and lowers gas temperature to reduce audible noise and observable signature of the muzzle blast.

Abstract: A locking system for a firearm attachment. The locking system having a rotating lock ring having a lock-and-release lever rotatably mounted thereto. The lock-and-release lever having a lock engagement surface optimally configured to forcefully engage a locking surface when in a locked orientation. The locking ring having a nonconcentric engagement surface that repositions in a radial direction when the locking ring rotates and the nonconcentric engagement surface is configured to engage the muzzle of a firearm for locking the muzzle attachment thereto.

Abstract: A flash suppressor for use with a firearm includes a generally cylindrically shaped housing having a series of horizontal groves about its exterior. An internal thread located at the proximal end of the housing is present for threadedly securing the housing to the muzzle of a firearm. There is a tapered chamber located between the internal threads and the opening which precedes the expansion chamber of the flash suppressor. The expansion chamber progressively expands being smallest at the proximal end and gradually increasing in diameter towards the distil end. Longitudinally extending, progressively helically shaped perforations are formed through the housing and in communication with the internal expansion chamber. These perforations are generally equally distributed about the housing except the bottom area which has no perforations present.