Solid constructions and 100% reliable on my MAC 5K. They might not be as pretty as the H&K magazines but at less than half the price they are an incredible value. I have eight MAC mags, two MKEs and two H&Ks and find no difference in their performance. From now on I will only be buying the MAC mags.

The coating is a lot better on these than the ones I received with the Mac5k. Looks like they have been treated with CLP as well. All work perfectly. Those HK mags were getting expensive so I grabbed a few of these and just as happy. Thanks SDS!!

Well made magazine

MAC Magazines work really good. I have tired others and they would not stay latched in the gun.

Quality looks pretty average. Hopefully the welds will not split apart.

Excellent fit on my MAC 5K at half the cost of the H&K mags. I now own 6 of these mags all working flawlessly and plan to get more.

Works perfectly.

I have not taken these to the range yet, so I have not used them yet. The quality seems good. I disassemble magazines when I get them to check them over and treat the internals with clp. Everything came apart and went back together as it should. I would buy these again without hesitation.

I like the magazines and work the best for my MAC5K. I do have trouble with magazines being sticky when removing them. I have to work at it to remove them. I always have to remove the coating with a sanding block. Not sure if it’s the mag well. Please let me know. However I will always purchase MAC magazines