NBS 16″ Billet Slick Side 5.56 Parkerized Mid-Length 1:7 M-LOK Complete Upper

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