S spooker609 Retired Screen Name Dec 12, 2001 #1 Is it possible to convert HK USP .40 compact to 9mm and .357 sig?
K krept New member Dec 12, 2001 #3 Headspacing would be different. New extractor like the Glock might do this? Be sure not to use the .40 mags around the BATmen.
Headspacing would be different. New extractor like the Glock might do this? Be sure not to use the .40 mags around the BATmen.
