A semi-interesting thing about the factory guide rod. It is one piece with a small hole for a paper clip. This isn't unusual. What's different is that the rod itself is drilled clear through. In essence, it is just a really long version of the standard GI guide.
The Atlas Gunworks tool-less rod for the 4.25" Prodigy fits in the MAC and hand cycles okay. I assume the gun would run fine with the Atlas and a conventional 12 or 14 pound spring as a replacement.
I'd guess the EGW .25" flat wire guide rod itself would work except the reverse plug is probably not going to bottom out properly in the slide. That's just a guess. The reverse plug in the MAC could be made in someone else's pattern. I do know it has a different shoulder than the Prodigy reverse plug. But maybe there's someone else's plug that will work?
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