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12.5 cmmg 308 barrel

Chuck Plissken

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Bought new 1 year ago to make a pistol. 300rds down pipe est. Went back and forth from barrels so this had been installed 3 times. Barrel nut was very snug sliding on everytime causing cosmetic wear as you can see. No gouging in barrel just poor finish. 

Gas port is pretty good size so I needed a adj gas block to make it cycle regardless of buffer weight. 

Not a fan of the cmmg 12.5 anymore. Willing to sell somewhat cheap. 

$110 shipped to lower 48.

Paypal preferred. 






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