In addition to 9mm and 40S&W my G32 also had an Advantage Arms 22 LR Upper and 22 LR Magazines.

 

Just FWIW, I've had a KKM conversion barrel on back order with GlockStore for about 6 weeks now. A quick call to KKM and the nice lady stated they have a 12 week lead time.

 

I run a KKM 9mm conversion barrel in my G32 Gen4. I also have a stock Glock. .40 for it too. When I run the 9mm conversion barrel I also use 9mm magazines. I'm a fan of the G32. Its a great platform