BARREL SUBASSM 16.1IN MT 4140CM SBN 5.56
$265.45
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Barrel Subassm 16.1in MT 4140CM SBN 5.56 Perfect for building your custom AR15 upper group - Comes with properly installed M4 barrel extension - All barrel sub-assemblies are properly headspaced Description: 16.1″ Medium Taper Profile 4140 Chrome Moly Salt Bath Nitride Finish inside and out 1:7 Twist 5.56×45 NATO Chamber Threaded 1/2-28 Midlength gas port .750″ Gas Journal
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