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 Parkerized Barrel. This also means taking the time to ensure that the upper will function reliably. We dimple every barrel and check for excessive leaks in the gas system using compressed air. We use Permatex 242 on key components while using mil-spec AEROSHELL 33MS Anti-Seize grease on the barrel nut and muzzle device. 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 Alloy Steel 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 NBS Enhanced AR-15 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