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Product Description

CMMG's Barrel Sub-Assembly is ideal for building your custom AR-15 upper group. It comes with properly installed M4 barrel extension.

CMMG 30D120A Barrel Sub-Assembly 300 Blackout 16.10" Black Nitride Finish 4140 Chromoly Steel Material Carbine Length with Medium Taper Profile for AR-15

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United States Association of Gun Owners

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