After months of testing, the Gears Crew gives their take on the CMMG MK47 Mutant and why it is such a fun gun to shoot both in Semi and FULL AUTO rate of fire. CMMG didn’t just piece together another 5.56 rifle and turn it into an AR/AK, they designed their own purpose built rifle.
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I installed a JP Enterprises heavy hammer spring and light trigger spring and disconnector and that helped the trigger immensely after polishing the seer. Your A.R. 15 parts will fit in there for your fire control. Most of your AR furniture will fit. However the handguard is proprietary along with the upper and lower housings and the bolt carrier group and the barrel they are a scaled down AR 10 set up. I'm using the primary arms ACSS scope sighted in for 7.62×39 at the appropriate range for the compensating radical to accurately compensate for bullet drop.
On the charging handle all you have to do is put an extended latch release on it eBay $8.50 done deal
It doesn't matter what magazine whether it's cheaper expensive if you do not mod the magazines for the A.R. 15 barrel extension and chamber set up none of the magazines at work it's an inherent problem from the design of the AK-47's Bolt and chamber
The problem with the magazines is the AK-47 bolt as it starts to strip off the next round the actual bullet is already starting to go in the chamber as it strips the round. The AR platforms that are chambered in 7.62 x 39 with the AR platform barrel with M4 feed ramps as the bottom of the AR 10 bolt starts to strip the round from the magazine it is not entering the chamber as of yet and the magazines are designed to help center the round so that it does go into the chamber for the AK-47; and this causes the round to pop up at a 30° to 40° angle causing the round to hit the top of the barrel extension causing a jam. Since the magazines are designed for the AK-47 feed and chamber, you will have to file down the lip in front of both feed lips and on the metal magazines you will have to remove or bend the two spurs that stick up in front of the feed lips. On the plastic mags such as the P mag and Tapco mags the magazines stick up too far into the magazine well allowing the bold to strike the very top of the feed lips and cause a reduction in Bolt speed moving forward to strip the next round and chamber it. This also adds to defeat jams or failure to strip around or failure to feed. The fix for that is sanding the top of the feed lips with a medium grit sand paper until the bottom of the bolt does not strike the top of the feed lips when going into Battery. These are all simple fixes it only cost the price of the sandpaper and a file preferably a round file and your time by as many magazines as you want and even if they are modified for your CMMGMK 47 they will still work in an AK-47 because it doesn't matter because it was designed to start entering the chamber as the round starts to strip so the magazines will be able to be used for your AK as well even after you modify them. Other than that the rifle runs flawlessly. As I own a first GEN CMMGMK 47 mutant. And I love shooting that rifle now that I've figured out what's wrong with the magazines through YouTube there is a video on this for 100% reliability and the gentleman explains it very well as I did he even shows you where you file and sand. I really like that rifle and I enjoy shooting mine
that is i prefer russian rifle
I had the same issue with mine and sent it back to CMMG. the reason you keep getting jams is probably cuz of the m4 style feed ramp (they should be milled so the ramp is lower and round). also you need to use an o ring on your extractor is needed if you have extraction problems. steel mags will work then.
that Mutant is one of the most finicky rifles around👎👎.. Picky with ammo and mags.. I'll stick with my AK47