NBS 16" 5.56 SOCOM Quad Rail Complete Upper

We set out to make one of the most affordable complete uppers, without sacrificing the integrity of the complete upper, and most important the rifle. This upper features a 16 NBS SOCOM barrel chambered in 5.56 NATO with a 1:7 twist and a midlength gas system. With the NBS line we wanted to make sure that we used quality products that wouldn't break the bank. This means using a nitrided steel gas block from APOC Armory as opposed to aluminum and using quality internals like the NBS Black Nitride BCG paired with one of our classic NBS 16" Midlength Barrels.Made in the USALifetime WarrantyUpper ReceiverAnderson- 7075-T6 aluminum- M4 Feedramps- .250 takedown pin holesBarrelNBS 16 5.56 NATO SOCOM1:7 Twist Midlength Black Nitride- Guaranteed to hold a 1.000 MOA at 100 yards with appropriate ammo and shooting techniques.Bolt & Carrier GroupNBS Black Nitride M16 Bolt Carrier Group .223/5.56- Full Auto Capable- 9310 MPI and HPT Tested bBolt- Case Hardened 8620 Carrier- 4130 Gas Key- Grade 8 Hardware With Proper Staking- Gas Key Sealed With Permatex No.3- 8740 Hard Chrome Firing PinCharging HandleStandard Charging HandleGas SystemMidlength- APOC Armory Nitrided Steel Gas Block- Stainless Steel Midlength Gas TubeHandguard12 Free Float Quad Rail - BlackMuzzle DeviceMil-Spec A2 Birdcage