Abstract: A firing pin lock for firearms is provided. The firing pin lock is a single piece of resilient metal that includes a pocket for receiving the head of the firing pin to prevent inadvertent discharge of the firearm. The firing pin lock can be mounted laterally in the bolt carrier group and is deflected outwardly by the action of the hammer.

Abstract: A recoil assembly for a rifle includes a baseplate comprising a baseplate body extending longitudinally along a central axis from a proximal end to a distal end, the baseplate body defining an opening extending along the central axis and configured to receive an end of a recoil spring guide rod. A latch plate extends up from the top surface of the baseplate body, the latch plate defining a charging handle opening a catch surface for a charging handle latch. In use, the recoil baseplate can be received in an aperture defined in the upper receiver of a rifle, where one or more recoil spring guide rods are received in the opening in the baseplate body. A charging handle can be slidably received through the charging handle opening and charging handle aperture of the upper receiver.

Abstract: A firing pin lock for firearms is provided. The firing pin lock is a single piece of resilient metal that includes a pocket for receiving the head of the firing pin to prevent inadvertent discharge of the firearm. The firing pin lock can be mounted laterally in the bolt carrier group and is deflected outwardly by the action of the hammer.

Abstract: A charging handle for a firearm includes a longitudinal body with a proximal end portion and a distal end portion. The proximal end portion includes at least one latch lever operable between a first position and a second position, the latch lever including a blocking plate. Moving the handle from the first position to the second position moves the blocking plate from a blocking position to a non-blocking position. The charging handle can be used with a firearm that includes a protrusion extending up from the rear-end portion of the lower receiver or from the recoil assembly. In the blocking position, the blocking plate is aligned with the protrusion and prevents the charging handle from rearward movement. When the blocking plate is in the non-blocking position, the blocking plate clears the protrusion to permit the charging handle to be drawn rearward.

Abstract: A charging handle for a firearm includes a longitudinal body with a proximal end portion and a distal end portion. The proximal end portion includes at least one latch lever operable between a first position and a second position, the latch lever including a blocking plate. Moving the handle from the first position to the second position moves the blocking plate from a blocking position to a non-blocking position. The charging handle can be used with a firearm that includes a protrusion extending up from the rear-end portion of the lower receiver or from the recoil assembly. In the blocking position, the blocking plate is aligned with the protrusion and prevents the charging handle from rearward movement. When the blocking plate is in the non-blocking position, the blocking plate clears the protrusion to permit the charging handle to be drawn rearward.

Abstract: A weapon system is provided. The weapon system includes a receiver and an operating group. The operating group includes a bolt at least partially housed within the receiver; an operating rod (op-rod) assembly arranged to axially translate within the bolt. The operating group also includes a carrier assembly, a bolt assembly, and a recoil assembly. The system further includes a hinge or pivot joint at a connection between the recoil assembly and the carrier assembly, a firing pin lock, an elastomeric cone interface between the bolt assembly and the receiver, a hollowed out piston, and/or tapering on the lug of the bolt assembly.

Abstract: A weapon system is provided. The weapon system includes a receiver and an operating group. The operating group includes a bolt at least partially housed within the receiver; an operating rod (op-rod) assembly arranged to axially translate within the bolt. The operating group also includes a carrier assembly, a bolt assembly, and a recoil assembly. The system further includes a hinge or pivot joint at a connection between the recoil assembly and the carrier assembly, a firing pin lock, an elastomeric cone interface between the bolt assembly and the receiver, a hollowed out piston, and/or tapering on the lug of the bolt assembly.

Abstract: A weapon system is provided. The weapon system includes a receiver and an operating group. The operating group includes a bolt at least partially housed within the receiver; an operating rod (op-rod) assembly arranged to axially translate within the bolt. The operating group also includes a carrier assembly, a bolt assembly, and a recoil assembly. The system further includes a hinge or pivot joint at a connection between the recoil assembly and the carrier assembly, a firing pin lock, an elastomeric cone interface between the bolt assembly and the receiver, a hollowed out piston, and/or tapering on the lug of the bolt assembly.

Abstract: A weapon system is provided. The weapon system includes a receiver and an operating group. The operating group includes a bolt at least partially housed within the receiver; an operating rod (op-rod) assembly arranged to axially translate within the bolt. The operating group also includes a carrier assembly, a bolt assembly, and a recoil assembly. The system further includes a hinge or pivot joint at a connection between the recoil assembly and the carrier assembly, a firing pin lock, an elastomeric cone interface between the bolt assembly and the receiver, a hollowed out piston, and/or tapering on the lug of the bolt assembly.

Abstract: A firearm assembly includes an upper receiver assembly having a front face and an aperture formed through the front face, and a feed ramp insert member removably coupled to the upper receiver assembly. The feed ramp insert member has a profile matching at least a portion of the aperture. The feed ramp insert member extends outwardly from the front face of the upper receiver assembly adjacent to the aperture. The feed ramp insert member is operative to interfere with incidental contact between a cartridge and at least a portion of the upper receiver assembly.

Abstract: An offset print unit includes a plate cylinder having an end, a rotatable plate cylinder support supporting the end and having a first bearing surface, a blanket cylinder having a blanket cylinder end, a rotatable blanket cylinder support supporting the end and having a second bearing surface and an actuating device for rotating the plate cylinder support and the blanket cylinder support, the first and second bearing surfaces contacting during a part of the rotation of the supports. A method is also provided.

Abstract: An offset print unit includes a plate cylinder, a blanket cylinder having an end and a blanket gear coaxial with the blanket cylinder, a drive axle or pinion supporting a gear driving the blanket gear and a blanket lift arm for selectively supporting the end to cantilever the blanket cylinder, the blanket lift arm being rotatable about the drive axle or pinion. A method is also provided.

Abstract: An offset web print unit includes a plate cylinder, a blanket cylinder, the plate cylinder being movable during a throw-off operation, and a tucker bar for tucking plates into the plate cylinder, the tucker bar having an axis movable with respect to the plate cylinder axis for reducing a gap during the throw-off operation.

Abstract: An offset print unit includes a plate cylinder having an end, a rotatable plate cylinder support supporting the end and having a first bearing surface, a blanket cylinder having a blanket cylinder end, a rotatable blanket cylinder support supporting the end and having a second bearing surface and an actuating device for rotating the plate cylinder support and the blanket cylinder support, the first and second bearing surfaces contacting during a part of the rotation of the supports. A method is also provided.

Abstract: An offset web print unit includes a plate cylinder, a blanket cylinder, the plate cylinder being movable during a throw-off operation, and a tucker bar for tucking plates into the plate cylinder, the tucker bar having an axis movable with respect to the plate cylinder axis for reducing a gap during the throw-off operation. A method is also provided.

Abstract: An offset print unit includes a plate cylinder, a blanket cylinder having an end and a blanket gear coaxial with the blanket cylinder, a drive axle or pinion supporting a gear driving the blanket gear and a blanket lift arm for selectively supporting the end to cantilever the blanket cylinder, the blanket lift arm being rotatable about the drive axle or pinion. A method is also provided.

Abstract: An offset print unit includes a plate cylinder having an end, a rotatable plate cylinder support supporting the end and having a first bearing surface, a blanket cylinder having a blanket cylinder end, a rotatable blanket cylinder support supporting the end and having a second bearing surface and an actuating device for rotating the plate cylinder support and the blanket cylinder support, the first and second bearing surfaces contacting during a part of the rotation of the supports. A method is also provided.

Abstract: An offset print unit includes a plate cylinder, a blanket cylinder having an end and a blanket gear coaxial with the blanket cylinder, a drive axle or pinion supporting a gear driving the blanket gear and a blanket lift arm for selectively supporting the end to cantilever the blanket cylinder, the blanket lift arm being rotatable about the drive axle or pinion. A method is also provided.