Bear Creek Arsenal 16" Carbine 5.56 NATO 1:7 Complete Upper

16" Carbine 5.56 NATO 1:7 Complete Upper Who doesn't like a nice quad rail? This upper also features a 16" BCA barrel chambered in 5.56 NATO with a 1:7 twist and a carbine-length gas system. This upper uses a nitrided steel gas block from APOC Armory as opposed to aluminum, providing an upgraded extended latch charging handle and using quality internals like the Black Nitride BCG paired with a Bear Creek 16" Carbine Barrel. Specifications Anderson or Aero Precision Upper Receiver (depends on availability) 7075-T6 Aluminum M4 Feedramps .250 takedown pin holes 16" Bear Creek 5.56 1:7 Twist Carbine Parkerized Barrel Guaranteed to hold a 1.000" MOA at 100 yards with appropriate ammo and shooting techniques Black Nitride M16 .223/5.56 Bolt Carrier Group Full Auto Capable 9310 MPI and HPT Tested Bolt 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 APOC Armory Extended Latch Charging Handle Carbine Gas System APOC Armory Nitrided Steel Gas Block Stainless Steel Carbine Length Gas Tube 12" Free Float Quadrail Black Handguard Mil-spec A2 Birdcage Muzzle Device