Description
Rock River Arms A4 mid-length upper comes chambered in .450 Bushmaster with a 16" chrome moly 1/24 twist barrel. Additionally this upper includes a RRA 13" M-Lok compatible lightweight free float rail and a RRA Operator Brake (5/8-32 thread). This is a complete upper with bolt carrier group, charging handle assembly and a 5 round magazine.
- .450 Bushmaster
- 16 Inch Chrome Moly, 1:24 Twist
- RRA Operator Brake, 5/8-32 Thread
- Low Profile Gas Block, Mid-Length Gas System
- RRA 13 Inch Extended Lightweight Free Float Rail
- Bolt Carrier Group, Charging Handle Assembly
- (1) Magazine, (5) Rounds
Specifications
- Caliber: 450 Bushmaster
- Fit: AR-15
- Accessories: 1 Magazine
- Barrel Length: 16"
- Capacity: 5 Rounds
- Finish: Anodized
- Type: Upper
- Color: Black
