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BRN-4 Upper Receiver Assemblies: Assembled from all-new components and fits standard AR-15 lowers. Upper includes barrel and gas system installed. Handguard compatibility with HK416-pattern handguards. Accepts any 1/2-28 muzzle device. Includes nitride-coated bolt carrier group. Barrel by Faxon, available in multiple profiles and lengths. Barrels chambered in 5.56x45mm NATO with 1/7 twist. See variant options BRN-4 14.5", 16", and 10.4" heavy/medium profiles.
Specifications
- Manufacturer:
- Brownells
- Category:
- upper-receiver
- Platforms:
- AR-15
- Interfaces:
- Muzzle thread: 1/2-28
- UPC:
- 050806500631
- MPN:
- BRN-4-10.4-UPPER-HVY BBL
- Required Component:
- Yes
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