I have a Ram Line dual use mag AR/Mini

by Slow Hand , Indiana, Saturday, October 19, 2013, 05:52 (4058 days ago) @ Jared

That actually functions fine in my AC556. I cut on a P-Mag a few years back and got it to fit into my AC556. It functioned ok, except I cut the space between the feedlips too wide and a couple times per mag, it'd launch two or three rounds out at once.

I did the work on a drill press with a crappy Harbor Freight X-Y axis vice and some cheap end mills. Now that P-Mags are down to $10 again, I may drop a few off with a machinist buddy and see if he doesn't have better luck.