The Bushmaster 20-inch Predator upper receiver assembly gives you a dependable foundation for a precise .223/5.56 AR. A lot of folks around here use ARs for varmint hunting, and this setup’s heavier barrel and 1×8 twist rate can really help with accuracy out past a couple hundred yards.
Bushmaster 20″ Predator Upper – Specs
- Barrel Length: 20 inches
- Caliber: .223 Remington / 5.56 NATO
- Barrel Construction: Fluted, Extra Heavy, Button-Rifled
- Twist Rate: 1×8 inches
- Muzzle Device: 11-degree Competition Crown
- Barrel Profile: 1” diameter heavy profile under the handguard
- Chamber: Custom-match hybrid – compatible with both .223 Remington and 5.56 NATO ammunition
- Handguard: Vented tubular aluminum free-float forend with a bipod stud
- Finish: Black
- Includes: Bolt, Bolt Carrier, Charging Handle
This Bushmaster upper is suited for a variety of uses. The free-float handguard helps reduce barrel vibration for consistent groupings, and the bipod stud provides a stable mounting point for field use. It’s a good option for building a dedicated varmint rifle, or a longer-range target gun.
Important Note on Transfers: We can ship this upper receiver directly to a licensed dealer in Nebraska. If you’re purchasing from outside the state, it needs to ship to an FFL holder. We also handle FFL transfers for a fee – if you’re having an upper shipped *to* us from another seller, please contact the store to arrange the details.





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