RTB Barreled 16" 5.56 Lightweight Upper Receiver | A2 | 15" M-LOK - Black Anodized
This Barreled 16 inch M-LOK lightweight upper receiver comes with our RTB 15 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.
- Length - 16"
- Material - 4150 Chrome Moly Vanadium
- 11-Degree Target Crown - Further improve accuracy
- Profile - Pencil
- Finish - QPQ Corrosion Resistant
- Gas System Length - Mid-Length
- Gas Block Journal - .625" Gas Block Journal
- Twist Rate - 1/7 Twist
- Muzzle - 1/2x28 Threaded
- Weight - 22.7 oz
- 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"