Garrison Mfg Inc Posted March 4, 2025 Report Share Posted March 4, 2025 WTS new production 300 blackout 11.5" and 16" barrels $100 each plus shipping 1-10 twist moly ER Shaw barrel. Carbine gas confirmation .750" shoulder for gas block or sight. Black phosphate finish. 5/8x24 thread. Does not include barrel nut or gas block/sight. 11.5" has .0995 gas port 16" has .086 gas port I don't own a suppressor and have not shot sub sonics through barrel with listed gas ports. Have shot regular supersonic and has cycled. Your mileage may vary depending on all variables. Quote Link to comment Share on other sites More sharing options...
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