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Old July 5th, 2019, 09:01 AM #11
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I haven't tried all magazines by a long shot but based on my limited experience with different brands I only use genuine Colt, Wilson Combat or Chip McCormick Shooting Star magazines. None have ever given an issue in my experience. Chip McCormick has been purchased by Wilson Combat so that might change quality...don't know Wilson's intentions with the brand...maybe they simply want the patent on the follower or maybe a different price point within the catalog.

Never trust a gun show no-name magazine. You might find good ones but they're essentially range mags you don't mind if you lose them. I would never trust one for serious training and use.
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Old July 5th, 2019, 04:21 PM #12
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I ran Colt factory mags for many years without issues.

I competed with Chip McCormack 10 rounders without issues.

I have used both CMC and Wilson 8 rounders without any issues.

If they have the straight feed lips (not stepped), they may give you issues with other than hardball ammo. The step makes sure the round releases from the feed lips at the proper place to feed other bullet types
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Old July 5th, 2019, 06:31 PM #13
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Quote:
Originally Posted by jimbobborg View Post
Unfortunately I believe these are out-of-spec knock-offs and certainly not "Colt Factory" mags.
The CAGE code is for a company that no longer exists (MASON-RUST out of Pittsburgh); these mags have been talked about for years.
From AR15:

https://www.ar15.com/forums/handguns...158179/?page=1

Quote:
99% chance they are fake. There may be some legit 30745 mags [currently on the market], but I doubt it.

Three ways to tell for sure:
1. Feed lips. Real GI mags have a constant taper from back to front, whereas the fake ones have a "step" parallel to the dimple on the follower.

[MY NOTE: that's for the GI-spec mags. And note the step on these mags is literally a notch when viewed from the side, whereas a good "stepped" mag like Wilson Combat is straight when viewed from the side, and more like "necked" when viewed from the top]

2. Witness holes. Look at the notch for the magazine catch. On a real GI mag, the nearest witness hole (the second one from the top) is slightly below that notch, while on fake ones the nearest witness hole is well above the magazine catch notch.

[MY NOTE: all of the witness holes are not opposite one another, in other words]

3. Baseplate lettering orientation. Hold the magazine so that the protruding tab on the baseplate is to your left. On a real GI mag, the lettering stamped on the baseplate reads correctly. On a fake mag, the lettering is rotated 180 degrees, so that it reads correctly if the tab is to your right.

[MY NOTE: the fit between mag body and base plate doesn't appear to be tight, and the spot welds are small/potentially weak based on other comments]
The "notch" at the back of the mag is also too shallow, and in the ad pic you can see the follower isn't even level.

Looking at the witness holes closer, the top hole is way too high so all the holes are too high.
That's what causes the second hole on the right side to be mis-spaced, otherwise it would be in the catch slot

CAGE code 1M291 is for Checkmate and those are legit.

pics from the ad listing:
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Old July 6th, 2019, 12:30 AM #14
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The BEST , most reliable followers are Virgil Tripp .
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Old July 7th, 2019, 07:01 AM #15
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the discussed counterfeit mags may also be old seconds which didn't meet specifications and were rejected by the government. Often these were the 'gun show' mags. These were sold in droves for at least a few decades. Good tip on the letters orientation.
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Old July 7th, 2019, 09:03 AM #16
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The stepped feed lips are not GI, but if done right, make the mags feed other than ball ammo more reliably.

I am not home to check, but I will check my Colt mags. I think they have the stepped feed lips. They are mostly from the 70s.
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Old July 9th, 2019, 04:57 AM #17
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Now you did it , you opened up the " tapered GI " vs " stepped swc " lip debate .
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Old July 9th, 2019, 06:40 AM #18
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Quote:
Originally Posted by Biggfoot44 View Post
Now you did it , you opened up the " tapered GI " vs " stepped swc " lip debate .
Yeap

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Old July 9th, 2019, 07:07 AM #19
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I've mostly used Chip McCormack and Wilson Combat magazines in my 1911's with no issues. I wouldn't scoff at Mec-Gar magazines though. They make magazines for a ton of manufacturers such as Sig and just slap the Sig logo on there. I've run a bunch of their mags in Sigs and my CZ 75's without any issues at all and they were significantly cheaper.
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