16" Carbine 5.56 NATO 1:7 Complete Upper

16" Carbine 5.56 NATO 1:7 Complete UpperWho 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.Limited Lifetime WarrantySpecifications:Anderson or Aero Precision Upper Receiver (depends on availability)7075-T6 AluminumM4 Feedramps.250 takedown pin holes16" Bear Creek 5.56 1:7 Twist Carbine Parkerized BarrelGuaranteed to hold a 1.000" MOA at 100 yards with appropriate ammo and shooting techniquesBlack Nitride M16 .223/5.56 Bolt Carrier GroupFull Auto Capable9310 MPI and HPT Tested BoltCase Hardened 8620 Carrier4130 Gas KeyGrade 8 Hardware with Proper StakingGas Key Sealed with Permatex No.38740 Hard Chrome Firing PinAPOC Armory Extended Latch Charging HandleCarbine Gas SystemAPOC Armory Nitrided Steel Gas BlockStainless Steel Carbine Length Gas Tube12" Free Float Quadrail Black HandguardMil-spec A2 Birdcage Muzzle Device