Quote:
Originally Posted by AfricanJerry
I bought a M1S 300 fireball upper this month and 5/8 24 is now the standard thread pitch on them. They are also sending them out with a .123 gas port hole size standard.
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How's that barrel shooting for you? I'm interested, and ready to buy a barrel. I'm going to be using subsonic ammo only.
Regards,
Kevin