I remember seeing some stuff about these mags when Chip brought them to market a few years back. But at the time I'd recently picked up a few Wilson ETMs and wasn't really in the market for more 1911 45 mags.
Fast forward a couple years and I'm enjoying the 45/1911 again with the intro of the new SIG 1911-X. That gun has generally been working fine except it simply WILL NOT lock open on CMC Power Mags with Tripp Super 7 upgrade kits. These feed great but just will not lock open. I've had a few instances where the slide will lock open but it is completely random and then the slide stop is just barely pushed up enough to catch the slide. Not ideal.
Curiously all the other mags I've used (Wilson ETMs, Wilson legacy 8 rounders, WC 10 rounders, old school Wilson 7 rounders, unmodified CMC 8 round Power Mags, Tripp 8 rounders and Mec-Gar OEM SIG and a couple Metalform branded as Ruger) have all worked fine.
This got me curious about the Railed Power Mags. I needed to get a few odds and ends from Bud's so I threw a couple of the new CMCs in my cart as well. The mags arrived today and I'm impressed. Construction feels solid. The mag bodies seem pretty rigid and the rolled over feed lips seems like a stroke of genius. If the 10 rounder will survive hard slide lock reloads with a full mag load over the course of a year or whatever it should make them the best 10 rounders on the market. The 8 round formula has pretty much been cracked at this point I'd say with the newer slightly longer body and room for a little more spring but the railed feed lips should make the new CMCs last that much longer over Tripps or Wilson ETMs.
What's probably most impressive is the springs. The mag springs are like something out of an AK! I think stock 8 round springs are usually a dozen or maybe thirteen coils? The CMC springs are 19 coils. 20 coils for the 10 rounders!
Who's using these mags now? Any issues with a particular bullet OAL or style? And nose dive feed problems with the top cartridge?
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