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Discussion Starter · #1 ·

Also picked up 3 12rd mags (.357sig 12rd mags) for the XD40 (which I also figured out last week will fit 9 .45GAPs and fire at least my target rounds). I got a couple Pierce "+2" extensions, and they fit +1 .40 and +0 .45s At least I can't get another .45 in it without a speed loader.

Some measurements that I thought were interesting...

The opening at the top of both the .40 and .357 mags is approx 3/8"

The opening at the top of the .45 GAP mag is approx 7/16"

I tried putting .40s in the .45 magazine and about 4-5rds into it the spring was too much tension and they came out through the opening.
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