Rock River Arms Completed Pistol Upper Receiver A4 .223/5.56mm 20 Inch Barrel Standart Profile 1-9 Twist 1/2-28 Thread A2 Handguard A2 Flash Hider

Upper Rock River Arms UPC 842834107759 MPN AR0450B

Rock River Arms Completed Pistol Upper Receiver A4 .223/5.56mm 20 Inch Barrel Standart Profile 1-9 Twist 1/2-28 Thread A2 Handguard A2 Flash Hider
$417.33

at MidwayUSA ·

Free shipping over $100

2 retailers · $417.33 to $489.99 shipped

This listing: Optics Planet $489.99

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Price history

Lowest price across retailers each day.

Lowest seen
$417.33
Typical price
$418.19
Tracked since
Jul 1, 2026

Today's best price matches the 134-day low and is about typical.

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