In stock (can be backordered)
The Radical Firearms 8.5″ 300 AAC Upper Receiver is a flat top, law-enforcement grade, drop in receiver, ready to be mounted to any Mil-Spec AR-15 lower receiver! This fully mil-spec compliant receiver provides a high-quality upper for any level budget or shooter. Comes complete and assembled with Upper Receiver, Forward Assist, Ejection Port Door, Barrel Nut. 8.5″ HBAR Profile Barrel and A2 Flash Hider.
**Bolt Carrier Group and Charging Handle are additional and are also available for purchase on our site.
- 8.5″ HBAR Melonite Barrel
- 4150 V Chrome Moly 1 in 8″ twist rate
- 300 AAC BLACKOUT Chamber
- 5/8×24 Thread Pitch
- M4 Feed ramps
- Low Profile Micro Gas Block
- Stainless pistol-length gas tube
- Direct Gas Impingement
- Mil-spec A2 Flash Hider
- Radical Firearms Free Float 7″ FQR (Quad Rail)
- Forged Upper Receiver with Forward Assist, Ejection Door and Shell Deflector
- All 300 Uppers are test fired in-house with one subsonic and one supersonic round before we ship. We ensure your upper will cycle with subsonic rounds as this is a problem in 95% of the other uppers on the market.
** CANCELLATIONS – Upper Assembly cancellations are subject to a 10% cancellation fee.
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