Description

Rock River Arms A4 Carbine upper comes chambered in .350 Legend with a 16″” chrome moly 1/16 twist barrel. Additionally this upper includes a RRA 13″” M-Lok compatible lightweight free float rail and a RRA Operator Brake (1/2-36 thread). This is a complete upper with bolt carrier group, charging handle assembly and a 10 round magazine.

Features

• .350 Legend
• 16 Inch Chrome Moly, 1:16 Twist
• RRA Operator Brake, 1/2-36 Thread
• Low Profile Gas Block, CAR Length Gas System
• RRA 13 Inch Extended Lightweight Free Float Rail
• Bolt Carrier Group, Charging Handle Assembly
• (1) Magazine, (10) Rounds