Partially as a result of the AK’s success, non-Kalashnikov designs utilizing the magazine of the 7.62x39mm Avtomat were few and far between until very recently. Due in part to civilian demand, in part the needs of special forces, and in part to countries armed with aging 7.62mm AK rifles looking to replace them – but not their magazines and ammunition, which are often still in production – there has been something of a resurgence of designs based around the venerable 7.62x39mm cartridge and the tough-but-heavy AK-pattern magazine.
At the 2015 SHOT Show, as Troubleshooter Berlin and I were wandering the floor, he mentioned that the magazine wells of some modern designs provided insufficient or improper support to the magazines. Naturally, we decided then to seek out as many of these rifles in the show as possible and compare them. While we were able to take a look at all the ones we could remember, in a few cases I did not have the presence of mind to take photographs, so this article will be supplemented with photos taken from the Internet. First, and most important is the AK rifle itself. This firearm supports its magazines in six areas: Front, rear top, rear bottom, each side, and the front top, indicated below:
The front and rear supports are most obvious to a designer of a new firearm using these magazines; also evident is that the front sides of the magazine where it is reduced in diameter also need support (not indicated in the above picture). What’s often neglected, we found, was supporting the top of the magazine, indicated in red in the above image. How does the AK magazine support this area? A view up through the magazine well will show us:
Next on our list is the SIG 556R, one of the rifles of which I did not manage to take any pictures:
The Rock River LAR-47 is a similar rifle to the CMMG MK 47 that was announced three years ago:
Another AR-15 offering that supports the use of AK magazines, the MGI Hydra multicaliber rifle:
Finally, the CMMG MK 47 Mutant:
These pictures make one thing clear: Among the non-AK designs utilizing this pattern of magazine shown here, the MK 47 is the most well-designed with respect to magazine support. Is the demand for this sort of rifle great enough that CMMG’s attention to detail will win out over its competitors? It’s difficult to know, but I’m sure owners of the MK 47 will appreciate it, anyway. EDIT: I emailed Brandon Novotny of CMMG about this, and he had this to say:
“The “wings” are most definitely magazine supports. They keep the front of the magazine from pivoting upwards during firing and have nothing to do with guiding the rounds into the chamber. The radii cut from them was necessary in the machining of the feed ramps into the upper.One thing to note that not many people notice is the benefit of the LR308 barrel extension. It has wider feed ramps in it compared to an AR15 which allows the round to more easily feed into the chamber. I’ve seen some AR15s have issues with the M4 feed ramps being too narrow for the larger case of a 7.62x39mm.”