.223 Wylde caliber; Features a low-key, yet ruggedly durable black finish of Type III hardcoat anodizing and Melonite; The B5 Systems Enhanced SopMod Stock features rugged construction and thoughtful design; Integrated QD sling mounts; No-slip cushioned buttpad; Barrel: 18" ballistic advantage, melonite, 1:7; Trigger: Flat modular match; SA Muzzle Brake; Safety switch: Single side; Magazines: (1) 20-round Magpul PMAG Gen M3