30 days limited warranty Awesome Fully Automatic Mac 11. Shoots hard at 300 FPS with a .20g BB. Operates on Green Gas. With a 40 shot high capacity magazine. Select fire Full Auto or Semi Auto. If you're looking for a realistic feel to your AirSoft experience, then HEAVY WEIGHT gas guns are where it's at! Highly realistic look, feel and action.The body is ABS plastic/metal hybrid construction, with some metal internal parts. Great quality from HFC. This gun includes numerous metal parts, making it look and feel realistic. Metal parts include threaded barrel, front sling mount, selector switch, charging lever, trigger, magazine, extendable stock, bolt, and extension release buttons. Adjustable Hop Up System: Hop Up is the process of putting backspin on the BB to increase it's maximum range and stabilize the projectile for more accuracy. Disclaimer: Comes with orange tip Power: Green Gas Action: Semi/Full-Auto Cal: 6mm 300 ft/sec