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. With the NBS line we wanted to build an affordable upper assembly without cutting corners. This means using 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 NBS Black Nitride BCG paired with a Bear Creek 16″ Carbine Barrel.
Anderson or Aero Precision (depending on availability)
Bear Creek 16″ 5.56 NATO 1:7 Twist Carbine Parkerized
|Bolt & Carrier Group||
NBS Black Nitride M16 Bolt Carrier Group .223/5.56
APOC Armory Extended Latch
12″ Free Float Quad Rail – Black
|Muzzle Device||Mil-Spec A2 Birdcage|