Patent ID: 8485173

Claim:
An airsoft gun comprising: a stock and barrel assembly comprising a rear compressed propellant gas container, a seal disposed at an opening of the compressed propellant gas container, a spring biased striker disposed forwardly of the seal, a chamber disposed forwardly of the striker, a weight slidably disposed in the chamber, a receiver disposed forwardly of the chamber and communicating therewith, the receiver including a spring biased lock, a forward opening, and an annular trough disposed on an inner surface of a forward portion of the stock and barrel assembly proximate the forward opening; a spring biased cap member locked at the forward opening and comprising a central, stepped diameter passageway, a spring biased piston removably disposed in the central, stepped diameter passageway, a retaining ring for locking a rear end of the piston at a rear portion of the central, stepped diameter passageway, the piston including an intermediate annular groove offset from the trough, and a peripheral surface adjacent to the groove, and a lock ball locked between the trough and the peripheral surface of the piston and in a surface of the central, stepped diameter passageway; a pistol grip extending laterally out of the receiver and comprising two opposite three-section slots disposed on a surface proximate a bottom; a magazine assembly disposed in the pistol grip for containing a plurality of plastic pellets wherein the top one of the pellets is adjacent to the receiver; and a trigger assembly disposed at a bottom of the pistol grip and comprising a spring biased spacer engaging the bottom one of the pellets, a spring biased cap element releasably disposed at the bottom of the pistol grip, and two safety pins releasably, moveably disposed through the cap element and the slots to lockingly urge against the spacer in a safe position of the trigger assembly; wherein one ends of the slots are a ready to fire position of the trigger assembly, intermediate sections of the slots are the safe position of the trigger assembly, and the other ends of the slots are a position for dislodging the cap element.