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1055 Views 5 Replies 5 Participants Last post by  post-apocalyptic
Which barrels will interchange in the Glock 20 10mm?
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A 10mm-.45 conversion barrel
Welcome to the Glock Forum rcop12 !!

What is your duty sidearm if I may ask...
I carry 10 mm just wondering what other calibers I could interchange in my 20.
.40,.357,& 9mm just have to buy the conversion barrels and a 9mm mag & a .40 mag you can shoot .357 rounds with a .40 mag. Also I have even shot 9mm rounds with my .40 mags with no problems.

I'm not a professional please don't just take my word. I would check with a GUNSMITH first. :)
A G-20 can fire 4 different calibers with the appropriate barrel; 10mm Auto, (obviously), .40 S&W, .357 Sig, and 9x25 Dillon. The standard 10mm mags will work with any of these calibers. Other caliber conversions are possible, but require replacing more parts.
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