Rainier Arms Mountain - Stripped Upper Receiver Group CHF Barrel
Out of stock
Rainier Arms Mountain - Stripped Upper Receiver Group CHF Barrel
Our Rainier Arms Mountain Series upper receiver group was designed for the enthusiast that's looking for a solid foundation for their next upper build using our 1:7 twist Mountain series barrel, our Mil-Spec upper receiver group and Lo Profile gas block. The rest is entirely up to the customer and can be easily built out.
Barrel Specs:
- Barrel Material: Chrome Moly Vanadium Steel
- Made of Mil Spec M249 Machine Gun barrel steel, with heavy M249 Chrome Lining, (appx. 2 times as thick as an M4 or M16)
- Barrel Type: Cold Hammer Forged
- Barrel Caliber: 5.56mm NATO Barrel
- Barrel Length: 14.5 Mid Gas, 16 Mid Gas, or 18 Rifle Gas
- Barrel Profile: Modified Mid Weight Government Profile
- Twist Rate: 1:7
- Muzzle Thread: 1/2A~—28 TPI (Threads Per Inch)
- Diameter At Gas Block: .750
- Bore: Chrome Lined
- Chamber: 5.56mm NATO
Does NOT come with a BCG, Muzzle device, Charging handle or handguard.
Component List:
- Rainier Arms Mountain Mid Weight Series 1:7 Twist
- Rainier Arms Match Lo Pro gas block
- Rainier Arms Forged Mil-spec Upper Receiver with UPK
- Rainier Arms Barrel nut
- Gas tube
- Weight: 18" - 2lbs 8.7 oz
- Weight: 16" - 2lbs 6 oz
SKU | RA-SURG |
---|---|
Manufacturer | Rainier Arms, LLC |
Option | AR15 |