
Faxon Firearms FX8612 Sentinel 8.6 Blackout 20+1 12″ Black Nitride
June 25, 2026
BRN 0119013004 A5 LTNG 12-3 28 DS
June 25, 2026RRA 450B0461 450 BM MID A4 UPR HALF SS UPPER
$754.00
RRA 450B0461 450 BM MID A4 UPR HALF SS UPPER
Out of stock
CALIBER:.450 BUSHMASTERUPPER RECEIVER:FORGED A4BARREL:16 INCH STAINLESS STEEL, 1:24 TWIST, CRYOGENICALLY TREATEDMUZZLE DEVICE:RRA OPERATOR BRAKE, 5/8-32 THREADGAS BLOCK:LOW PROFILE GAS BLOCK, MID-LENGTH GAS SYSTEMHANDGUARD:RRA 13 INCH EXTENDED LIGHTWEIGHT FREE FLOAT RAIL, M-LOK COMPATIBLEINCLUDES:BOLT CARRIER GROUP, CHARGING HANDLE ASSEMBLY AND ONE 5 ROUND MAGAZINE
| UPC | 842834124138 |
|---|---|
| Manufacturer | Rock River Arms |
| Manufacturer Part Number | 450B0461 |
| Action | .450 Bushmaster |
| Barrel Finish | Stainless Steel |
| Barrel Length | 16" |
| Caliber/Gauge | .450 Bushmaster |
| Product Type | Complete |
| Rate of Twist | 1:24" |



