We’ve gotten a lot of good feedback about our first generation NBS 16″ upper, so for the second generation we wanted to provide even more bang for the buck. Key upgrade areas are the handguard and barrel. The handguard is now a 13″ Matrix Arms Foxtrot M-LOK Free Float Rail. It has a slim profile with in interior diameter of 1.3″ and good hard coat anodizing. it’s a quality AMERICA Made handguard. The barrel has been upgraded to a 16″ Nitride Barrel chambered in 5.56 NATO with a 1:7 twist and Midlength Gas System. The nitride treatment means it has double the effective lifespan of an unlined parkerized or mag phosphate barrel. We’re still using a nitrided steel gas block from an AMERICA Manufacturer as opposed to aluminum, you’re still getting an upgraded extended latch charging handle and the upper still uses reputable internals like the proven APOC Armory Black Nitride BCG.
Aero Precision (depending on availability)
BCA 16″ 5.56 NATO 1:7 Twist
|Bolt & Carrier Group||
Toolcraft Black Nitride M16 Bolt Carrier Group .223/5.56
APOC Armory Extended Latch
Matrix Arms 13″ Foxtrot M-LOK Free Float Rail – Black
|Muzzle Device||Mil-Spec A2 Birdcage|