The CMMG MK47 is built from the ground up to take the 7.62X39 round. Unlike other 7.62X39 rifles that are scaled up versions of 5.56 rifles, the MK47 is really a 308 rifle that is “shortened”. The upper receiver is basically a shortened 308 receiver, and the bolt is essentially a modified 308 bolt, instead of being a "thinned" out 5.56 bolt. The lower itself is also is a 308 lower redesigned to take AK magazines, with the ability to take standard AR trigger parts.
In terms of using corrosive ammo and bolt life, the rep at CMMG stated that they had fired 10,000 round through one of the rifles and not an issue had been encountered. Since the barrel and the bolt group are nitrided, corrosive should not be an issue but cleaning with hot water is still a good idea.
While I did not fire the rifle in full automatic, someone else did fire a 60 round drum in one go while I was there. The rifle is indeed bigger than a 5.56 and a 300 blk, but that is the price to pay for part longevity. The lack of bolt catch is a bit different, but that is the trade off of using AK magazines.
Nice booth display, kinda remind me of the movie "interview":
Black bolt is CMMG MK47's, the other one is a typical redesigned 5.56 bolt for 7.62X39
In terms of using corrosive ammo and bolt life, the rep at CMMG stated that they had fired 10,000 round through one of the rifles and not an issue had been encountered. Since the barrel and the bolt group are nitrided, corrosive should not be an issue but cleaning with hot water is still a good idea.
While I did not fire the rifle in full automatic, someone else did fire a 60 round drum in one go while I was there. The rifle is indeed bigger than a 5.56 and a 300 blk, but that is the price to pay for part longevity. The lack of bolt catch is a bit different, but that is the trade off of using AK magazines.
Nice booth display, kinda remind me of the movie "interview":
Black bolt is CMMG MK47's, the other one is a typical redesigned 5.56 bolt for 7.62X39
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