Ready to strike steel at 700 meters?
This accurized 20" .308 AR upper assembly is the key to that level of performance. Featuring a precision-cut stainless barrel forged from 416R Crucible Stainless, it's the perfect barreled upper assembly for maximizing your long-range performance. The mid-weight barrel profile provides enough steel for nailing tight shot groups without excessive weight.
Includes free-float, low-profile M-LOK handguard with lightweight construction, and nitrided A2 "Birdcage" flash hider for muzzle rise and flash mitigation.
NOTE: Bolt carrier group and charging handle not included.
AR .308 Rifle Upper Specifications
Barreled upper assemblies are assembled in-house before shipment.
Barrel
- Chamber: .308 Winchester
- Contour: Mid-Weight
- Length: 20”
- Twist Rate: 1:10
- Gas System: Rifle
- Gas Block Dia.: 0.750”
- Muzzle Threads: 5/8x24
- Material: 416R stainless
- Finish: Stainless
- Process: Button Rifled
- Lining: None
- Extension: .308
- Muzzle: A2 “Birdcage” Flash Hider
Handguard
- Attachment System: 17" M-LOK, Lightweight
- Finish: Type III Hardcoat Anodized (Mil-Spec)
- Top Rail: M1913 Picatinny
- Material: Billet 6061-T6 Aluminum
- Attachment: Barrel Nut
Stripped Upper Receiver
- Profile: .308 Flattop
- Material: Forged 7075-T6 Aluminum
- Finish: Type III Hardcoat Anodized (Mil-Spec)
Lower receiver assembly sold separately.
WARNING: Handling firearms parts and accessories can expose you to lead and other petroleum products known to the State of California to cause cancer and reproductive harm. For more information go to: www.P65Warnings.ca.gov
Shipping of various parts and/or accessories are prohibited to states and locales (ie New Jersey, California, New York, etc…) with restrictions against certain parts and/or accessories or "assault weapons" (i.e. states with high-capacity magazine restrictions, manufacturing of semi-automatic weapons, etc..). It is your responsibility to be aware of your local firearms laws before purchasing from our website or machining a firearm. We try our best to keep our shipping page current, but laws change daily.
GunBuilders.com only ships within the United States. Federal legislation dictates we cannot ship our products internationally.
