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AR15.COM
9/11/2024 2:50:50 AM EDT
[Last Edit: Finmach1][Edited]
Hi,

has anyone built a "mutant" to a race ready riffle to 3gun of type competition in 7.62x39 caliper? I asked from the CMMG and they only said that is ready out of box... I have not received the riffle yet (300 resolute with 16,1" barrel) but I have as on old stock of new parts like Bushmaster / Kyntec hydraulic buffers, plenty of different buffer springs.  I have a JP clickable gas port in my JP riffle and I though acuiring a same gasport for the CMMG. I have an old M4-72 muzzle brake out of my Sig716 but it really blows the gases towards the shooter, so I will get a new muzzle brake like Unrivaled or something similar.

Is the 7.62/39 gashole the same size as it is in a similar 223 riffle? Can I use the 0.750" gasport with CMMG Mutant? Should I use heavy buffer due to heavy BCG.

Any input would be greatly appreciated.
8/21/2025 11:37:35 AM EDT
[#1]
I've got two MK47's, 16,1 and 12,5", I like them quite a lot but seriously heavy BCG makes it one wild animal. Otherwise a great gun, AK steel mags tend to chew the upper where the mags contact the upperframe. Any idea is this how serious?

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