In Glock armorers class, I learned the only barrel swap that is approved by Glock is a Glock 32 barrel in a 23 frame-slide. Oddly, it was not mentioned the other way around.
I have almost a dozen additional barrels, mostly Glock, a couple KKM and a lone wolf. Some also need slides, a 21 and a . 22LR
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19 21 Cutaways 19 19C 20 20SF 21 21C 23 23C 32 32C 22LR 460 Glock Armorer
Nebraska Concealed Carry Instructor, 32 years CC Experience1981-2013 Retired FFL1991-2001
NRA Benefactor Life NRA CRSO NRA instructor RSOi CPi PPITHi PPOTHi RTBAVi