Specs Based on the ultimate warfighter rifle, the M4 carbine, this air rifle will incinerate targets with blistering semi-auto shotsThe airgun features a full-metal construction throughout the barrel, receiver, and the 18-round BB magazine and is field-strippableIt has a fully adjustable rear sight with a front sight post and a six-position adjustable buttstock with just the push of a buttonFueled by a single 12 gram CO2 cartridge, it’s able to send .177 steel BBs downrange at velocities of more than 495 fpsThe air rifle has a removable carry handle and a flat top Weaver/Picatinny scope rail is under the carrying handleThe air rifle has standard AR15/M4 controls, including safety/fire selector and magazine releaseMust be 21 years of age. Signature required upon delivery This Item Cannot Ship to the Following States: PA, NJ, CA, MA, NY