CMMG 16" 9mm Barrel and BCG Kit 4140CM SBN
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Specifications
Description
Features:16? Medium Taper1:10 Twist4140 Chrome MolySalt Bath Nitride Finish inside and out9A-19 NATO ChamberThreaded 1/2-28Radial Delayed Blowback Bolt (Patent Pending)Requires enlarged ejection port for reliable operation.Weight: 2.5lbs