Gas-port regulating gas-block insert install and DIY manufacture.

[kirby25]

Does anyone know if these will work with Geissele gas blocks? I've got a 11.5" Colt FBI barrel with a pinned Geissele gas block and I have been throwing around the idea of using one of these on it, but I am not sure it would work considering the size of the hole in the Geissele block.


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Yes it will, actually have the exact same setup(same barrel using a geissele gas block)even using a port from jerry on that setup.

And jerry, sorry i haven't gotten back with you about the inconel ports. Ill be in touch hopfully this weekend, can you pm mw your best contact method?

Anyone on the fence about these or trying to reduce gas on your rifle, dont hesitate to get some from clint at black river. They are super hepful and a wealth of knowledge when it comes to picking a size!