NBS 16″ 5.56 SOCOM Quad Rail Rifle Kit

This NBS 16″ 5.56 SOCOM Quad Rail Rifle Kit includes everything needed to finish a stripped lower receiver.

About the 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 proven NBS Black Nitride BCG paired with one of our classic NBS 16″ Midlength Barrels.

We also take the time to ensure that the upper will function reliably. We use Permatex 242 on key components while using mil-spec AEROSHELL 33MS Anti-Seize grease on the properly torqued barrel nut and muzzle device.

Made in the USA

Lifetime Warranty

Upper Receiver	Anderson – 7075-T6 aluminum – M4 Feedramps – .250 takedown pin holes
Barrel	NBS 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 Group	NBS 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 Pin
Charging Handle	Standard Charging Handle
Gas System	Midlength – APOC Armory Nitrided Steel Gas Block – Stainless Steel Midlength Gas Tube
Handguard	12″ Free Float Quad Rail – Black
Muzzle Device	Mil-Spec A2 Birdcage

• High Quality Mil-Spec Lower Parts Kit
• Mil-Spec Buffer Kit
• LE Stock

* Lower Receiver is not included with this rifle kit