NBS 16" Carbine 5.56 NATO 1:7 Complete Upper

Who doesn't like a nice quad rail This upper also features a 16" NBS barrel chambered in 5.56 NATO with a 1:7 twist and a carbine length gas system. With the NBS line we wanted to build an affordable upper assembly without cutting corners. This means using a nitrided steel gas block as opposed to aluminum, providing an upgraded extended latch charging handle and using quality internals like the NBS Black Nitride BCG paired with a NBS 16" Carbine Barrel. Lifetime Warranty Upper Receiver Anderson - 7075-T6 aluminum - M4 Feedramps - .250 takedown pin holes Barrel 16" 5.56 NATO 1:7 Twist Carbine Parkerized - Guaranteed to hold a 1.000" MOA at 100 yards with appropriate ammo and shooting techniques. Bolt & Carrier Group NBS Black Nitride M16 Bolt Carrier Group .223/5.56 - Full Auto Capable - 9310 MPI and HPT Tested bBolt - Case Hardened 8620 Carrier - 4130 Gas Key - Grade 8 Hardware With Proper Staking - Gas Key Sealed With Permatex No.3 - 8740 Hard Chrome Firing Pin Charging Handle Extended Latch Gas System Carbine - Nitrided Steel Gas Block - Stainless Steel Carbine Length Gas Tube Handguard 12" Free Float Quad Rail - Black Muzzle Device Mil-Spec A2 Birdcage