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Wolf Performance A1 Complete Upper 12.5" 5.56 NATO 1:7 Piston Driven
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Wolf Performance A1 Complete Upper 14.5" 5.56 NATO 1:7 Piston Driven
Wolf Performance A1 Complete Upper 16" 5.56 NATO 1:7 Piston Driven
CMMG 55DE10A Barrel Assembly .223/5.56 NATO 16.1" Nitrided
CMMG 55DC70A Barrel Assembly .223/5.56 NATO 16.1" Nitrided
Colt Defense Un-issued Prototype IAR (Infantry Assault Rifle) Upper Receiver W/ Knights Armament Flip-up Sights - 16&quo