American automatic rifle designed by Eugene Stoner. M16 is an individual self-repeat weapon. The principle of operation is based on the use of the energy of powder gases discharged through the side opening of the barrel (powder gases are fed directly to the bolt carrier, rifle does not have a classical gas piston). Locking the lock by turning to the left.

After firing the last cartridge lock stops in the rear position. Castle released the button to the left of the magazine slot. On the right side weapons manual lock. The trigger mechanism of limiting the length of the series enables shooting fire a single and three-shot series. Fire selector switch connected to the fuse, on both sides of the weapon. Supply of double row magazines arc with a capacity of 30 rounds (the ability to use magazines 20 nabojowych).