Rock River Arms Completed Upper Receiver Standart A4 .308/7.62X51mm NATO 20 Inch Barrel 1-10 Twist 5/8-24 Thread A2 Handguard A2 Flash Hider Black
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Rock River Arms
Overview
The Rock River Arms Completed Upper Receiver Standart A4 .308/7.62X51mm NATO 20 Inch Barrel 1-10 Twist 5/8-24 Thread A2 Handguard A2 Flash Hider Black is a upper receiver. Compare prices from multiple merchants and find the best deal.
Specifications
Rock River Arms Completed Upper Receiver Standart A4 .308/7.62X51mm NATO 20 Inch Barrel 1-10 Twist 5/8-24 Thread A2 Handguard A2 Flash Hider Black
Available Merchants(1)
Prices checked
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Build history on GunPartPicker
Builders on GunPartPicker first added the Rock River Arms Completed Upper Receiver Standart A4 .308/7.62X51mm NATO 20 Inch Barrel 1-10 Twist 5/8-24 Thread A2 Handguard A2 Flash Hider Black to a build in July 2026.
Today the one retailer we track is out of stock. Listed prices start at $599.99 at Optics Planet for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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