Rock River Arms Completed Upper Receiver Carbine A4 9MM Luger 16 Inch Barrel 1-10 Twist 1/2-36 Thread R4 Handguard A2 Flash Hider Black

Upper Rock River Arms UPC 842834103928 MPN 9MM0328B

Rock River Arms Completed Upper Receiver Carbine A4 9MM Luger 16 Inch Barrel 1-10 Twist 1/2-36 Thread R4 Handguard A2 Flash Hider Black
$448.49

at Optics Planet ·

Free shipping over $49

2 retailers · 1 in stock

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Price history

Lowest price across retailers each day.

Lowest seen
$338.58
Typical price
$347.49
Tracked since
Oct 20, 2026

Today's best price is $109.91 above the 23-day low and 29% above typical.

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