Firearm configuration where the action and magazine are located behind the trigger, reducing overall length while maintaining barrel length.

Adjustable metal aiming devices on firearms, consisting of a front post and rear notch, used without magnification.

A mounting system for attaching optical sights to rifles.

Firearm mechanism where a sliding fore-end (foregrip) is moved back and forth to eject spent casings and chamber a new round.

A pistol barrel with external helical grooves allowing the attachment of a suppressor or other muzzle devices.

A straight, cylindrical ammunition container that feeds cartridges into a firearm's action via gravity or a spring.