This is the first upper in our line of NBS (No Bullshit) Upper Assemblies. We wanted to build an affordable upper assembly without cutting corners. This means using a nitrided steel gas block from an American Manufacturer as opposed to aluminum, quality American Made handguards and using a proven M16 profile Black Nitride BCG paired with an NBS 16″ Mid-Length Barrel.
Lifetime Warranty
Upper Receiver
NBS Slick Side Billet Upper Receiver
– M4 Feedramps
– .250 takedown pin holes
Barrel
NBS 16″ 5.56 NATO 1:7 Twist Mid-Length Parkerized
– Guaranteed to hold a 1.000″ MOA at 100 yards with appropriate ammo and shooting techniques.
Bolt & Carrier Group
Black Nitride or Nickel Boron M16 Bolt Carrier Group .223/5.56
– 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
Charging Handle
Standard Mil-spec Charging Handle
Gas System
Mid-Length
– APOC Armory Nitrided Steel Gas Block
– Stainless Steel Mid-Length Gas Tube
Handguard
NBS 12″ or 15″ M-LOK Handguard
– American Made
Muzzle Device
Mil-Spec A2 Birdcage – Nitride





