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.
MANUFACTURER: Rock River Arms
MPN: 350L0328
MODEL: Tactical Carbine
Accessories: 1 Magazine
Barrel Length: 16″
Capacity: 10 Rounds
Finish: Anodized
Fit: AR-15
Caliber: 350 Legend
Type: Upper
Color: Black
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