Rock River Arms Completed Upper Receiver Varmint A4 .308/7.62X51mm NATO 20 Inch Barrel 1-10 Twist Free-Float Handguard Black 308A0551
$775.00
Rock River Arms Completed Upper Receiver Varmint A4 .308/7.62X51mm NATO 20 Inch Barrel 1-10 Twist Free-Float Handguard Black 308A0551. 308/7.62X51mm NATO Completed Upper. Developed working with some of the most robust and dependable substances...