The C308 rifle is built around a roller locked delayed blowback system. The C308 battle rifle features a fluted chamber for reliable cycling and extraction, MIL-Spec 1913 Picatinny scope rail permanently mounted to the receiver, polymer furniture, 5/8x24 RH threaded 18" barrel for use with common muzzle accessories and our proprietary Chevron muzzle brake. Comes with one 5 rd. magazine, and two 20 rd. magazines. Barrel: 18", Overall: 40.2", Weight: 8 lbs.