Rock River Arms A4 Coyote Carbine upper comes chambered in .300 AAC / Blackout with a 16" chrome moly 1/8twist barrel. Additionally this upper includes a RRA 12.5" M-Lok compatible lightweight free float rail and a Smith Vortex flash hider (5/8-24 thread). This is a complete upper with bolt carrier group and charging handle assembly..
Features :
Features :
- .300 AAC Blackout
- 16-Inch Chrome Moly, 1:8 Twist
- Smith Vortex Flash Hider / 5/8–24 Thread
- Low Profile Gas Block
- RRA 12.5 Inch Lightweight Free Float Rail
- Bolt Carrier Group And Charging Handle Assembly
