RTB Complete 16" 5.56 Upper Receiver | A2 | 13.5" M-LOK | With Bolt Carrier Group and Charging Handle
This Complete 16 inch M-LOK upper receiver comes with our RTB 13.5 inch free float handguard and is built with only the best Mil-Spec components. The heart of this upper is comprised of a 4150 barrel and our black nitride bolt carrier group that is finished with an incredible polish, making the action smooth and easy to keep clean.
- LENGTH - 16"
- MATERIAL - 4150 CHROME MOLY VANADIUM
- 11-DEGREE TARGET CROWN - FURTHER IMPROVE ACCURACY
- PROFILE - M4
- FINISH - QPQ CORROSION RESISTANT
- GAS SYSTEM LENGTH - CARBINE
- GAS BLOCK JOURNAL - .750" GAS BLOCK JOURNAL
- TWIST RATE - 1/7 TWIST
- MUZZLE - 1/2X28 THREADED
- WEIGHT - 28OZ
Bolt Carrier Group:
- Enhanced 9310 Steel (Bolt)
- 8620 Tool Steel (Carrier)
- Bolt is shot Peened and MPI
- All BCG components are pre-polished before being processed and then post polished for an incredible shine
- Machined from a Mil-Spec 7075 T6 forging Hard Coat Anodized per Mil-A-8625F, Type III
- M4 Feed ramps
- Made in the U.S.A.
- MATERIAL: HARD COAT ANODIZED ALUMINUM HANDGUARD, ALUMINUM BARREL NUT
- PRECISION BORE
- ACCEPTS M-LOK RAIL SECTIONS & ACCESSORIES
- 7075-T6 BARREL NUT
- RAIL LENGTH IS MEASURED ALONG THE TOP
- INNER DIAMETER: 1.36"
- Tried and True Standard Charging Handle
- Forged 7075 Aluminum construction
- Mil-Spec Type-III Hardcoat Anodized finish
- Caliber - .223 / 5.56 / 300 Blackout
- Made in the USA
Please Note: Uppers may present light fouling from our quality control process and/or test firing