This is a discussion on .357 SIG Conversion Questions (MERGED) within the General Firearm Discussion forums, part of the Related Topics category; I keep seeing posts that people who own a Glock 32 in .357 Sig can buy a conversion barrel to make it into a 9mm. ...
I keep seeing posts that people who own a Glock 32 in .357 Sig can buy a conversion barrel to make it into a 9mm. Basically, two guns in one for a few extra dollars.
Can the opposite be accomplished. Can you put a .357 conversion barrel into a Glock 19 (9mm) or 23 (.40 S&W)? If not, why not? Is it the increased pressure of the .357 round?
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Array
It is the diameter of the hole in the slide. You can shoot a 9mm or a .357 sig out of a .40, but you can not shoot a .40 out of a 9mm or .357 sig. You can go down, but not up.
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I just called Glock. According to them, I can put a standard Glock .357 barrel in one of my .40 S&W guns and it should work just fine. Can use the same mags and everything.
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I don't mean to hijack the thread, but does the same apply to Sig guns? For instance, can a 220 (.45) be converted to a .357 or a 9mm?
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Short answer, Dieslnut - no.
Basically, the only simple conversion is from .40 to .357 Sig (and vice versa), because the .357 Sig is a necked-down .40 case. Almost all other conversions require more than a barrel swap.
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Array
Ok, thanks for the reply! I guess I'll just have to buy a second gun in the smaller caliber eventually... oh darn...Originally Posted by OPFOR
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Array
It's actually a necked-down 10mm case, but close enough to work. The barrel exterior diameters are the same in a Glock .40 and .357. The 9mm conversion barrel is thicker than the stock ones to fit the larger G32 frame hole.
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after doing some reading online on .357 mag conversions for glock, it seems that all i have to do to my g23 is drop in a g32 barrel. is this really the case?
.357 SIG, Not MAG.
Two totally different cartrideges. Buy yes, that's basically all you have to do.
Array
I seem to recall a 9mm barrel conversion kit for the Sigs in .357/.40. it had a 9mm barrel and a slightly lighter spring, and for reliable feed you need 9mm mags. I considered one for my P226ST, but decided to stick with the .40 conversion barrel. No spring change and no extra mags. If I want to switch to .40, all I do is drop in the barrel.
- Tom
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Array
G32 and G23 even use the same magazines, even thought they're marked different.
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One of the reasons I went with a Glock 23 was because I could buy a .357 Sig barrel and a 9mm barrel and have a 3 caliber gun!
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Array
Don't forget if you're going from a 32 or 23 to a 9mm, you have to buy a "conversion" barrel, not just a stock G19 one. You'll also need some G19 magazines.
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