WE SOCOM 4.3 Airsoft Gas Pistol, Bottom Rail Included: Pistol, one 15-rd magazine & owner's manual Made completely from metal with an anodized finish, it's more than just a replica! BBs fly out the muzzle at 300 fps, with realistic blowback action. Expect 290-300 fps with 0.20-gram.and solid with a strong kick during blowback. ATTENTION: The extended magazine base fill port on this gun is not compatible with some green gas canisters we carry. This gun is propane compatible and can be filled by using the TSD Sapien Arms Ver2 aluminum propane adaptor, CG17002B1[PY-A-3398]. This adaptor fits on any disposable propane bottle & fits the magazine fill ports of all green gas airsoft guns.