An improved bolt and bolt carrier with integral gas key having an extension nozzle threadedly secured and pinned to the gas key for use with a direct gas operated firearm is provided. The extension nozzle is designed to receive a portion of the host firearms gas operating system. The firing pin retaining pin is oriented so as to expose its widest profile to the firing pins annular flange, increasing its service life. The bolt has a plurality of lugs extending from its forward end and an extractor recess. The extractor recess is constructed to accommodate an enlarged extractor claw while not undercutting the bolt lugs adjacent thereto. The extractor engages approximately 57% more of a seated ammunition cartridges rim as compared to some prior art AR15/M16 type extractors used with automatic firearms chambered in 6.8SPC. The result is an improved bolt and bolt carrier which provides for increased operational reliability.

An improved bolt and bolt carrier with integral gas key having an extension nozzle threadedly secured and pinned to the gas key for use with a direct gas operated firearm is provided. The extension nozzle is designed to receive a portion of the host firearms gas operating system. The firing pin retaining pin is oriented so as to expose its widest profile to the firing pins annular flange, increasing its service life. The bolt has a plurality of lugs extending from its forward end and an extractor recess. The extractor recess is constructed to accommodate an enlarged extractor claw while not undercutting the bolt lugs adjacent thereto. The extractor engages approximately 57% more of a seated ammunition cartridges rim as compared to some prior art AR15/M16 type extractors used with automatic firearms chambered in 6.8SPC. The result is an improved bolt and bolt carrier which provides for increased operational reliability.

A magazine caseless weapon is disclosed and can be used for shooting using the caseless ammunition. The weapon includes a handguard or handguard with bipods, or gunstock, magazine, barrel, barrel latch, multifunctional cartridge, conical bushing of a receiver, the receiver, safety spring, safety, trigger guard with magazine box, trigger bar, trigger bar spring, magazine latch, axis, firing pin, spring of firing pin latch, firing pin latch, conical bushing of the bolt, bolt body, firing hammer, mainspring, mainspring latch, hunting or skeletal buttstock, threaded bushing for back plate screw, back plate or adjustable back plate, threaded bushing of bipods, cross screw, cross screw nut, upper screw, lower screw, caseless ammunition, dowel screw, dowel screw nut, latch of adjustable back plate, adjustable cheek piece, latch of adjustable cheek piece, stop, stop lock, threaded bushing of stop lock, lower part, upper part and screw of muzzle break, folding adjustable bipod, and bipod latch.

An extractor of a firearm is mounted rotatably about a rotation point with an extractor claw in the region of an end of the extractor near the barrel of the firearm and a contact element in the region of an end of the extractor remote from the barrel. An extractor spring biases the extractor in an end position determined when the chamber is empty. Torque-free pulling of a cartridge case is made possible in that the extractor has a protrusion mounted in a pot of the breech. The protrusion's leading edge adjoins an undersurface of the protrusion. The protrusion is mounted on a bottom surface of the pot near the barrel. The protrusion leading edge is supported on a leading edge of the pot near the barrel. The pot leading edge forms the transition from the bottom surface to a boundary wall of the pot near the barrel. The leading edge forms a rotation axis of the extractor, which allows rotation of the extractor relative to the breech.

An extractor of a firearm is mounted rotatably about a rotation point with an extractor claw in the region of an end of the extractor near the barrel of the firearm and a contact element in the region of an end of the extractor remote from the barrel. An extractor spring biases the extractor in an end position determined when the chamber is empty. Torque-free pulling of a cartridge case is made possible in that the extractor has a protrusion mounted in a pot of the breech. The protrusion's leading edge adjoins an undersurface of the protrusion. The protrusion is mounted on a bottom surface of the pot near the barrel. The protrusion leading edge is supported on a leading edge of the pot near the barrel. The pot leading edge forms the transition from the bottom surface to a boundary wall of the pot near the barrel. The leading edge forms a rotation axis of the extractor, which allows rotation of the extractor relative to the breech.

An improved bolt and bolt carrier with integral gas key having an extension nozzle threadedly secured and pinned to the gas key for use with a direct gas operated firearm is provided. The extension nozzle is designed to receive a portion of the host firearms gas operating system. The firing pin retaining pin is oriented so as to expose its widest profile to the firing pins annular flange, increasing its service life. The bolt has a plurality of lugs extending from its forward end and an extractor recess. The extractor recess is constructed to accommodate an enlarged extractor claw while not undercutting the bolt lugs adjacent thereto. The extractor engages approximately 57% more of a seated ammunition cartridges rim as compared to some prior art AR15/M16 type extractors used with automatic firearms chambered in 6.8SPC. The result is an improved bolt and bolt carrier which provides for increased operational reliability.

An improved bolt and bolt carrier with integral gas key having an extension nozzle threadedly secured and pinned to the gas key for use with a direct gas operated firearm is provided. The extension nozzle is designed to receive a portion of the host firearms gas operating system. The firing pin retaining pin is oriented so as to expose its widest profile to the firing pins annular flange, increasing its service life. The bolt has a plurality of lugs extending from its forward end and an extractor recess. The extractor recess is constructed to accommodate an enlarged extractor claw while not undercutting the bolt lugs adjacent thereto. The extractor engages approximately 57% more of a seated ammunition cartridges rim as compared to some prior art AR15/M16 type extractors used with automatic firearms chambered in 6.8SPC. The result is an improved bolt and bolt carrier which provides for increased operational reliability.

Ambidextrous bolts that allow a user to quickly and easily change the side of the firearm from which a spent casing is ejected by application of a simple switching mechanism that does not require disassembly of the firearm. Aspects of the disclosure also include debris shields for improving the longevity and reliability of extractors, firearms that are configured for ambidextrous operation, methods of using firearms, and methods of modifying firearms to incorporate ambidextrous functionality.

Ambidextrous bolts that allow a user to quickly and easily change the side of the firearm from which a spent casing is ejected by application of a simple switching mechanism that does not require disassembly of the firearm. Aspects of the disclosure also include debris shields for improving the longevity and reliability of extractors, firearms that are configured for ambidextrous operation, methods of using firearms, and methods of modifying firearms to incorporate ambidextrous functionality.

A bolt assembly for a rimmed-cartridge firearm has a bolt head on a forward end. An extractor is located on the bolt head and engages at least a portion of a rim of a rimmed cartridge without engaging a front surface of the rim, the extractor retaining the rim adjacent the bolt head.