The HFC M9 Replica Green Gas Airsoft Pistol has an entirely metal upper and lower frame/slide. This M9 variant comes with both semi-automatic and fully-automatic firing modes. In full-auto mode, this pistol can empty it's entire 25 BB magazine in under 2 seconds! This pistol also comes with a hard-case with foam padded interior for safe storage and transportation. A picatinny rail is built into the lower fram which allows the addition of a laser or flashlight. The grip is textured for a secure hold on the weapon. This GBB has a functional hammer and safety.