Switchblock Gas port Diameters for 300 Whisper/Blackout ???

Discussion about rifles in 300 AAC BLACKOUT (7.62x35mm), hosted by the creator of the cartridge.

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NavyDoc8404
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Re: Switchblock Gas port Diameters for 300 Whisper/Blackout

Post by NavyDoc8404 »

My CMMG 16" bbl came with about a 1.10 carbine gas port. (A 7/64 bit drops in a little loose, but a 1/8 will not fit). I'm having a little trouble with failure to feed, but I think it's a problem with my MI gas block and Strike gas tube. When the tube is installed, part of the gas block port is blocked by the tube. It's as if the pin isn't allowing the tube to insert fully into the block. Going to try a different tube first.
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