The RaiderMC 556 SBR pistol features a threaded, match grade Monobloc barrel with an integrally machined gas block; 10.38" free floating Picatinny rail; forged aluminum upper and lower receivers; M16 bolt carrier group including charging handle and buffer tube/spring; custom trigger guard; Monobloc ejection port cover; custom QD end plate,buffer tube and enhanced grip. Includes magazine.