The RaiderMC 556 SBR pistol features a threaded, match grade Monobloc barrel with an integrally machined gas block; 8.50″ 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’ and HD Defense adjustable Close Quarter (CBQ) stock and enhanced grip. Includes magazine.