Jacob Grey Firearms Complete Upper Assembly 5.56 NATO 16in 1-7 Twist 1/2×28 Thread Black

Jacob Grey Firearms Complete Upper Assembly 5.56 NATO 16in 1-7 Twist 1/2×28 Thread Black. 56 NATO and built around a 1/7 twist barrel. 7-sided M-LOK Handguard and 7075 Aluminum Upper Receiver. These uppers have a pistol-length gas system that is combined with a low-profile gas block which provides reliability under any condition. The handguard provides a tactical picatinny rail along the top which allows room for front and rear sights and reduces weight due to less material than standard full length picatinny rails. This upper receiver also includes the JG 7075 billet machined aluminum dust cover which gives this Upper Receiver a sleek perfectly matched look that would be a worthy addition to any quality build. The Jacob Grey Billet Aluminum Upper Receiver features a No forward assist function due to the exacting tolerances and reliability of its functioning. To prevent any confusion the purchase of all Jacob Grey Complete Uppers includes the Jacob Grey ambidextrous charging handle & F/A rated BCG. NOTE: Complete uppers with barrels under 16 in length are only for use on AR-15 pistol lowers legal Short-Barreled Rifles (SBR) or must have a muzzle device permanently attached to bring the length to at least 16. DISCLAIMER: Firearm specifications are subject to change at any time based on availability and supply chain shortage. Specifications for Jacob Grey Firearms 5.56 NATO Complete Upper Assembly: Manufacturer: Jacob Grey Firearms Cartridge: 5.56x45mm NATO Barrel Profile: Government Gas System Length: Carbine Length Barrel Twist Rate: 1-7 Threads per Inch: 1/2×28 Handguard Type: Free-Float Muzzle Device: Flash Hider Color: Black Gun Model: AR-15 Fabric/Material: Chrome Moly Vanadium 7075 T6 Aluminum Attachment/Mount Type: M-LOK Gas Block Journal Size-Diameter: .750 in Handguard Style: Round Rail Gun Rail: M-LOK Gun Type: Rifle Gun Make: AR Platform Barrel Material: Chrome Moly Gas Block Journal Size-Length: 1.9 in Bolt Carrier Group Included: MIL-SPEC Charging Handle Included: MIL-SPEC Package Contents: Jacob Grey Firearms 5.56 NATO Complete Upper Assembly Jacob Grey Firearms 556N75CUA: Complete Upper Assembly 5.56 NATO 7.5in 1-7 Twist 1/2×28 Thread Black Jacob Grey Firearms 556N105CUA: Complete Upper Assembly 5.56 NATO 10.5in 1-7 Twist 1/2×28 Thread Black Jacob Grey Firearms 556N16CUA: Complete Upper Assembly 5.56 NATO 16in 1-7 Twist 1/2×28 Thread Black Jacob Grey Firearms 556N13CUA: Complete Upper Assembly 5.56 NATO 13in 1-7 Twist 1/2×28 Thread Black Jacob Grey Firearms 556N16CUA: Complete Upper Assembly 5.56 NATO 16in 1-7 Twist 1/2×28 Thread Black