Description Stag 15 Tactical 10.5″ uppers are chambered in 5.56 NATO and built around a 10.5″ 1/7 twist barrel, Stag 9″ M-LOK SL Handguard and 7075 T6 Aluminum receivers. These uppers use a carbine-length gas system that is combined with a low-profile gas block, which provides reliability under any condition. The free-floating Stag 9″ M-LOK SL Gen 2 Handguard features a slim, lightweight profile that offers increased ergonomics, maximum airflow, and modularity while continuing to provide the utmost strength and durability. The handguard provides uninterrupted picatinny rail along the top, which allows room for sights, optics and accessories the shooter may require. This upper half does not include a BCG or Charging Handle. Action: Semi-Auto Direct Impingement Caliber: 5.56 NATO Twist Rate: 1/7 Button Rifled Muzzle Device: A2 Flash Hider Barrel: 10.5″, 4150 CMV, Black Nitride Handguard: Stag 9″ M-LOK SL Receiver Material: Forged and Mil-Spec 7075 T6 Aluminum with Type 3 Hard Coat Anodize Bolt Carrier: None Gas System: Carbine-Length with Low Profile Gas Block Charging Handle: None Additional information Weight 51.05 oz Dimensions 22.5 × 5 × 5 in Barrel Finish Nitride / Melonite Barrel Profile Medium Cartridge Compatibility 5.56 NATO Barrel Length 10.5 Gas System Length Carbine Twist Rate 1-7 BCG / Charging Handle Not Included MPN STAG15110302