Rock 450B0461 450 Bm Mid A4 UPR Half SS Upper

Rock 450B0461 450 Bm Mid A4 UPR Half SS Upper
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
Type: Complete
Caliber: 450 Bushmaster
Barrel Length: 16"
Barrel Material: Steel
Twist: 1:24"
Barrel Description: Heavy
Barrel Finish: Stainless Steel
Receiver Finish: Black
Handguards: 13" M-LOK
Handguard Finish: Black
Barrel Length Range: 16" To 16.99"

Manufacturer: Rock River Arms
Mfg Number: 450B0461
Model: LAR-15M
Series: Mid A4