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

Ammunition in which the propellant is encased in a combustible or consumable material, eliminating the traditional metal cartridge case.

Firearm action where an electric motor cycles the slide or cylinder via a rotary mechanism, replacing manual operation.

An internal magazine is a pistol magazine that is contained within the grip and loaded from within the firearm.

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