i know you can get a .40 barrel for glock 20....

[Davecameron77]

what else needs to be swapped to allow this conversion. will the glock 24 mags fit in a glock 20? will glock 20 mags hold .40 even though theyre shorter? any help appreciated

 

[757Fixer]

Been there done that. The G20 mags hold .40 cal no problem. All you have to do is swap is the barrel.

 

[Davecameron77]

can you use a glock 24 barrel or does it have to be custom?

 

[guninhand]

It has to be a barrel for a G20 chambered in .40 S&W. Chances are the .40 brass will come back straight into your face.

 

[piperdown]

Go to glockmeister.com , he has stainless KKM barrels in .40 for your G20, works like a charm and a great guy to deal with