Licensed by CyberGun. A brand new addition to the Smith & Wesson family, the Sigma SW40F is a Deluxe Heavyweight Gas Blowback model featuring superior build quality, High Power (1 Joule) - Antishock ABS Resin and some metal parts. Top slide recoils with every shot. Semi-Automatic. Powered by CO2. Overall the gun has a solid feel and balanced weight, much like the real thing. The single-piece grip is rather comfortable and is textured on the front and back to ensure a firm grasp. The gun does ship with an orange plastic tip, which can be removed to reveal a threaded barrel for supporting a silencer. The 25-round magazine has a metal exterior and carries a substantial weight that adds to the overall feel and balance. At the bottom of the mag is a threaded hole to support the interchangeable CO2 input valves. This is a gas gun, which means it's powered by gas and doesn't need to be cocked every time. It's fast, clean, inexpensive and easily maintained; it does not require batteries to operate. Also, spring guns are the toughest, most durable of all AirSoft guns, because they're made with few breakable pieces. If you're looking for a fun, reliable firearm that'll look great and perform even better, you've come to the right place.