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Discussion Starter · #1 ·
I'm new to the Sub rifles and it's a rainy day here in TN, so I decided to try something.

I only have a 10 round Glock mag for my Sub 40 and I have several Glock 17 mags. I put a 40 round in the 9mm mag. Fits fine. Put the empty mag in the Sub. Fits fine, locks back on empty mag. Put 17 mag with one 40 round in the Sub and released bolt. Fed fine and ejected with the bolt handle and locked back on empty.

Haven't tried to fire it yet. Just wondered if anyone else had tried this and how it worked?
 

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I'm new to the Sub rifles and it's a rainy day here in TN, so I decided to try something.

I only have a 10 round Glock mag for my Sub 40 and I have several Glock 17 mags. I put a 40 round in the 9mm mag. Fits fine. Put the empty mag in the Sub. Fits fine, locks back on empty mag. Put 17 mag with one 40 round in the Sub and released bolt. Fed fine and ejected with the bolt handle and locked back on empty.

Haven't tried to fire it yet. Just wondered if anyone else had tried this and how it worked?
I never thought of this, but the gen 2 sub 2000 has glock 22/17 mags stamped on the side so I imagine it does fit.
 

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The original 40 S&W handguns were issued with 9mm mags. It was only after initial trials that it was found they worked better with a slightly larger opening at the top of the mag, and the feed lips were trimmed back a little to allow the cartridge to come up out of the mag a little sooner so it could align with the chamber.
 

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Discussion Starter · #5 ·
The original 40 S&W handguns were issued with 9mm mags. It was only after initial trials that it was found they worked better with a slightly larger opening at the top of the mag, and the feed lips were trimmed back a little to allow the cartridge to come up out of the mag a little sooner so it could align with the chamber.
Now that is interesting! My interest is really piqued now. Next range day, I'll give the 17 mag a real test.

And still be looking for some old, used 22 Glock mags. Bound to be some police trade in's around.
 

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Discussion Starter · #8 ·
I went out today with the Sub 40 to chrono some loads and decided to try the 9mm Glock 17 mag. I was surprised. It worked just as good as the .40 Glock 22 mag. No malfunctions shooting 180gr lead TC type boolits. It's good to know that they will work if I need them.

I did order some of the Korean 31 round mags from Centerfire Systems. They were on sale for $9.99 last week. That mag fed well also. It was a little "rough" feeling while loading, but had no malfunctions with it either. Will probably take it apart and see if there are any rough places that may have been hanging up a little while loading. Just a tap on the mag seemed to straighten things out, just like banging on an M16 mag used to.
 
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