Rock River Arms Completed Pistol Upper Receiver, A4 .223/5.56mm, 4.5 Inch Barrel, 1-9 Twist, 1/2-28 Thread, Free-Float Handguard, Vortex Flash Hider, Black, AR0369B AR0369B

UPC:
842834124725
MPN:
AR0369B

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Rock River Arms AR-15 A4 Upper Receiver Assembly 223 Remington (Wylde) 4.5 Chrome Moly Barrel 4.25" M-LOK Handguard Black - 229399" $564.99 AR0369B show more like this 16.70 MidwayUSA
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