Home / Gun Parts / Rock River Arms / Rock River Arms A4 AR-15 Complete Upper Receiver 223 Remington (Wylde) 20" Barrel
Rock River Arms A4 AR-15 Complete Upper Receiver 223 Remington (Wylde) 20" Barrel
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MSRP
$831.99
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Updated
Aug 26, 2026
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Specifications
Description
The Rock River Arms AR-15 A4 Upper Receiver Assembly is designed to pin onto any mil-spec lower receiver. Just add an optic, or set of sights, and you are ready to send lead downrange! FeaturesFlattop upper receiverMil-spec compatibleAnodized finish
