A firearm operating system includes a forward bolt with an internal cavity, a carrier disposed on a rear side of the forward bolt where the carrier includes a cavity, a short cam pin, a plurality of bearings, a retracted configuration, and a deployed configuration. At least a portion of a forward section of the short cam pin is disposed within the internal cavity of the forward bolt. At least a portion of a rear section of the short cam pin is disposed within the cavity of the carrier. Movement from the retracted configuration to the deployed configuration includes movement in a forward/aft direction of the short cam pin relative to the forward bolt and movement of the plurality of bearings.

A firearm operating system includes a forward bolt with an internal cavity, a carrier disposed on a rear side of the forward bolt where the carrier includes a cavity, a short cam pin, a plurality of bearings, a retracted configuration, and a deployed configuration. At least a portion of a forward section of the short cam pin is disposed within the internal cavity of the forward bolt. At least a portion of a rear section of the short cam pin is disposed within the cavity of the carrier. Movement from the retracted configuration to the deployed configuration includes movement in a forward/aft direction of the short cam pin relative to the forward bolt and movement of the plurality of bearings.

Delayed action magazine-based self-loading firearm with gas piston action. Delay action prevents the movement of the self-loading firearm's slide and lock during the actual shot and will keep them closed. The construction of the delayed action stores the energy from the powder gas either mechanically or pneumatically, to be used later for the operation of the firearm's load-lock mechanism. The delayed action mechanism of a delayed action firearm consists of the body (E) and a guide (C) with its openings (D) placed inside it, through which the high-pressure powder gas escapes through the firearm's barrel (A) onward to the gas piston (F), which moves pierced by a pole (H), with the pole (H) being attached to the bottom piece (I). A spring (G) may be connected to the pole (H), with the pressure of the powder gas compressing either the spring (G) or alternatively the air by the gas piston (F) against the bottom piece (I). The retainer (K) stops the gas piston (F) into its back position leaving the spring (G) or air into compression. Through the action of the shooter or a separate automatic mechanism on the releaser (M) the bottom piece (I) is allowed to dash backwards with the help of the spring (G) or air. The bottom piece (I) is fixed to the firearm's slide (O), which uses the firearm's load and lock mechanism to perform the cartridge case removal and loading actions.

Delayed action magazine-based self-loading firearm with gas piston action. Delay action prevents the movement of the self-loading firearm's slide and lock during the actual shot and will keep them closed. The construction of the delayed action stores the energy from the powder gas either mechanically or pneumatically, to be used later for the operation of the firearm's load-lock mechanism. The delayed action mechanism of a delayed action firearm consists of the body (E) and a guide (C) with its openings (D) placed inside it, through which the high-pressure powder gas escapes through the firearm's barrel (A) onward to the gas piston (F), which moves pierced by a pole (H), with the pole (H) being attached to the bottom piece (I). A spring (G) may be connected to the pole (H), with the pressure of the powder gas compressing either the spring (G) or alternatively the air by the gas piston (F) against the bottom piece (I). The retainer (K) stops the gas piston (F) into its back position leaving the spring (G) or air into compression. Through the action of the shooter or a separate automatic mechanism on the releaser (M) the bottom piece (I) is allowed to dash backwards with the help of the spring (G) or air. The bottom piece (I) is fixed to the firearm's slide (O), which uses the firearm's load and lock mechanism to perform the cartridge case removal and loading actions.

A damping assembly for a firearm is provided. The damping assembly includes at least a gas piston and a recoil spring, which may be arranged coaxially or in parallel. The gas piston is disposed within a gas tube which has access to the bore of the firearm through a gas inlet. Pressurized gas from the bore can enter the gas tube via the inlet and push against the gas piston, which can dampen the cycle rate of the firearm.

A damping assembly for a firearm is provided. The damping assembly includes at least a gas piston and a recoil spring, which may be arranged coaxially or in parallel. The gas piston is disposed within a gas tube which has access to the bore of the firearm through a gas inlet. Pressurized gas from the bore can enter the gas tube via the inlet and push against the gas piston, which can dampen the cycle rate of the firearm.

A gas-delayed blowback system for a firearm preferably includes a receiver, a barrel and a spring-loaded moveable slide. The barrel is ported to at least two gas compression chambers into which expanding propellant gases flow after the firearm is fired. The gas compression chambers and ports vary in volume such that propellant gas pressure increases rapidly in one of the chambers, thereby locking the slide upon firing. Pressure in the other gas compression chambers increases and decreases at a slower rate due to a smaller port size, further delaying rearward travel of the slide after the bullet exits the barrel and barrel pressure is relieved.

A gas-delayed blowback system for a firearm preferably includes a receiver, a barrel and a spring-loaded moveable slide. The barrel is ported to at least two gas compression chambers into which expanding propellant gases flow after the firearm is fired. The gas compression chambers and ports vary in volume such that propellant gas pressure increases rapidly in one of the chambers, thereby locking the slide upon firing. Pressure in the other gas compression chambers increases and decreases at a slower rate due to a smaller port size, further delaying rearward travel of the slide after the bullet exits the barrel and barrel pressure is relieved.

Delayed action magazine-based self-loading firearm with gas piston action. Delay action prevents the movement of the self-loading firearm's slide and lock during the actual shot and will keep them closed. The construction of the delayed action stores the energy from the powder gas either mechanically or pneumatically, to be used later for the operation of the firearm's load-lock mechanism. The delayed action mechanism of a delayed action firearm consists of the body (E) and a guide (C) with its openings (D) placed inside it, through which the high-pressure powder gas escapes through the firearm's barrel (A) onward to the gas piston (F), which moves pierced by a pole (H), with the pole (H) being attached to the bottom piece (I). A spring (G) may be connected to the pole (H), with the pressure of the powder gas compressing either the spring (G) or alternatively the air by the gas piston (F) against the bottom piece (I). The retainer (K) stops the gas piston (F) into its back position leaving the spring (G) or air into compression. Through the action of the shooter or a separate automatic mechanism on the releaser (M) the bottom piece (I) is allowed to dash backwards with the help of the spring (G) or air. The bottom piece (I) is fixed to the firearm's slide (O), which uses the firearm's load and lock mechanism to perform the cartridge case removal and loading actions.

Delayed action magazine-based self-loading firearm with gas piston action. Delay action prevents the movement of the self-loading firearm's slide and lock during the actual shot and will keep them closed. The construction of the delayed action stores the energy from the powder gas either mechanically or pneumatically, to be used later for the operation of the firearm's load-lock mechanism. The delayed action mechanism of a delayed action firearm consists of the body (E) and a guide (C) with its openings (D) placed inside it, through which the high-pressure powder gas escapes through the firearm's barrel (A) onward to the gas piston (F), which moves pierced by a pole (H), with the pole (H) being attached to the bottom piece (I). A spring (G) may be connected to the pole (H), with the pressure of the powder gas compressing either the spring (G) or alternatively the air by the gas piston (F) against the bottom piece (I). The retainer (K) stops the gas piston (F) into its back position leaving the spring (G) or air into compression. Through the action of the shooter or a separate automatic mechanism on the releaser (M) the bottom piece (I) is allowed to dash backwards with the help of the spring (G) or air. The bottom piece (I) is fixed to the firearm's slide (O), which uses the firearm's load and lock mechanism to perform the cartridge case removal and loading actions.