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

A firearm feed system where ammunition is stored in a separate container (magazine) that can be removed and replaced, enabling rapid reloading.

A pistol feature allowing it to fire grenades or projectile rounds.

Select fire is a fire selector mechanism on a firearm that lets the shooter choose the firing mode, such as semi‑automatic, burst, or fully automatic.

Firearm capability allowing selection between semi-automatic and fully automatic modes via a selector switch.