Abstract: A firearm hand grip can have a cylindrical body with grooves, digit ridges, and a digit rest. The grooves can be circumferential grooves completely encircling the cylindrical body and providing improved grip relative to a smooth surface. The digit ridges can be positioned to fit comfortably between a user's fingers while the digit rest supports the lowest finger. The hand grip's top section includes a right cheek, a left cheek, and a receiver interface. The top section can be used to attach the hand grip to a firearm and can be shaped to blend smoothly into a firearm receiver. The cylindrical body is between the top section and the bottom of the hand grip. The dimensions of the hand grip include the cylindrical body's outer diameter, digit ridge offset distance, and digit rest offset distance. The dimensions are selected to ensure user comfort while using the firearm.

Abstract: A mounting rail can be added to an air rifle by clamping a clamp to the air cylinder of the air rifle. The clamp has a monolithic clamp body that includes the mounting rail, a base, a left jaw and a right jaw. The left and right jaws are attached to the base. A clamp actuator can draw the jaws together to clamp onto the air cylinder. The base can include a mounting rail such as a Picatinny rail. As such, clamping the monolithic clamp body onto the air cylinder adds a mounting rail to the air rifle.

Abstract: A modular armorer's stand has a block that, on one end, can engage the magazine well of a firearm frame. The other end of the block has a tongue that can be slid into a base. The base can be mounted to a surface such as a work bench. As such, the frame is held solidly in place for gunsmithing. The firearm's magazine release can engage a notch in the block. Each block can be sized specifically for a certain firearm or firearm family while every block has a tongue that can be held by the base. An armorer therefore needs a single solidly mounted base and that base can hold various blocks that, in turn, hold various firearms.

Abstract: A bayonet mounting fixture can adapt a rifle having a mounting rail to also have a bayonet mount. Previously, bayonets were often mounted to a firearm by passing the barrel through a hole in the guard and then attaching the rear end of the bayonet to a bayonet mount or mounting lug further back. The bayonet mounting fixture can have a forward mount and a rear mount attached to the mounting rail. The forward mount has a round piece that can go inside the hole in the bayonet's guard. The rear mount can have a mounting lug to which the rear end of the bayonet is attached.

Abstract: Covers for key lock mounting systems on small arms such as the AR or M4 family of rifles and carbines can provide protection for the firearm, comfort for the operator, and electrical power to firearm accessories. The cover has keyhole grips that are pressed into the key lock mounting points in mounting system. The cover is held seated against the surface of the mounting system by the shape and resilience of keyhole grips. V-notch keyhole grips can attach to keyhole shaped mounting points and slot shaped mounting points. The covers have connectors and internal circuitry such that covers lined up edge to edge are electrically connected. Firearm accessories can be electrically powered the connectors.

Abstract: A stacked ordnance device provides a disposable and optionally non-reusable projectile weapon. A gun barrel can be formed by holding two half barrels together such that separating the halves exposes the length of the bore. Stacked ordnance devices have multiple projectiles, seals, and charges positioned sequentially in the gun barrel. A controller can electronically trigger igniters that ignite the charges and fire the projectiles. The device can have more than one gun barrel and the gun barrels can be made from plastic. Multi-barrel devices can have gun barrels arranged radially around and damped to a backbone.

Abstract: An ergonomic grip for a revolver can be better suited to people's hands by extending the forward edge of the finger interface forward to near the lower portion of the trigger guard. The palm interface and the finger interface can intersect or nearly intersect at the bottom of the grip. The grip has a substantially cone shaped cross-section.

Abstract: A mounting member for use in a pontoon boat for mounting a boat structure onto a pontoon log flotation device comprising an elongated body having first and second protrusions extruded from the body and integral therewith. The first protrusion extends longitudinally of the body, and the second protrusion also extends longitudinally of the body generally parallel to the first protrusion. The first and second protrusions define a space therebetween for receiving an upper edge margin of the pontoon log, and are continuously sealed to the log along the lengths of the protrusions.A method of assembling a pontoon log is also disclosed.