The threaded one is a .40, the one ported on the muzzle is a 10, the one with the slots polished is the original Glock, the black one is the 6"Glock, I also have a 5.5" (forgot the manufacturer) and a KKM 6" 10mm which are not in the pic.
Love the Tanfoglio. But he G20 is hard to beat when it comes to bringing something to camping and hiking. I rarely pack the G29 since I figure the round shines in a full size gun. View attachment 145456
I was just curious as to whether you had any different calibers .
My first introduction to the G20 years ago (maybe 15 or more) was from an individual that had several barrels in different "wildcat" calibers (for lack of a better term) which I currently cannot recall.
I believe that all the ammo he was using came from Buffalo Bore.
ETA: I believe one was. 460 Rowland.
Another was a 9x25 Dillon.