40 S W In Glock 20. BUY G23P Compact .40 S&W glock store It made shooting standard load 10mm auto feel like a 40 S&W Glock 22, but while shooting a few 10 round mags of full-power Underwood 135 grain and 200 grain 10 mm. The .40 S&W is a larger and more powerful cartridge than the .45 ACP, and the Glock 20's chamber is not large enough to accommodate the .40 S&W cartridge
Glock UI2250203 G22 Gen3 Full Size 40 S&W 15+1 4.49″ Black Steel Barrel Matte Black Serrated from gunstuff.tv
Since the .40 S&W brass is 3.6mm shorter, its forward progress isn't stopped by the end of the 10mm chamber (it doesn't headspace on the case mouth) Not only does this give your Glock 20 the ability to shoot 40 S&W ammunition, it also features a more "tight fitting" more fully supported chamber, and conventional rifling.
Glock UI2250203 G22 Gen3 Full Size 40 S&W 15+1 4.49″ Black Steel Barrel Matte Black Serrated
I shoot .40 S&W handloads out of the G40 OEM barrel and a KKM 7" barrel If I was going to carry a .40 S&W my choice would be one of my 20's with a conversion barrel rather than a 22 or 23 The .40 S&W is a larger and more powerful cartridge than the .45 ACP, and the Glock 20's chamber is not large enough to accommodate the .40 S&W cartridge
Glock 20 Gen 4, SemiAutomatic, 10mm, 4.61" Barrel, 15+1 Rounds 641925, SemiAutomatic at. However, you will lose a bit of velocity over shooting out of a .40 S&W chamber due to the longer 10mm chamber and throat If you attempt to fire a .40 S&W cartridge in a Glock 20, it will likely damage the pistol and could injure you.
Glock 22 Gen 4 .40 S&W. Instead, the extractor hangs onto it and keeps it up against the breech face. The recoil spring and 10mm magazines work with the 40 S&W ammo