PTAC 16" 1:9 A4 SS12G2 Upper w/ BCG & CH

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Barrel Length: 16" Caliber: 5.56 NATO Twist: 1 in 9" Phosphate Finish .750" Gas Block Diameter Standard Feedramps Forged A4 Upper Midwest Industries SS12G2 Rail M16 Profile Bolt Carrier Group
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$499.99