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Rock River Arms
Overview
The Rock River Arms A4 9mm Upper Receiver is a upper receiver. Compare prices from multiple merchants and find the best deal.
Specifications
Price and stock
The Rock River Arms A4 9mm Upper Receiver was out of stock everywhere we track for all of September 2026, and today none of the 2 retailers we track has it in stock right now. Listed prices start at $449.99 at Optics Planet for when it comes back.
Prices checked · refreshed daily across 37 retailers
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