I am looking to pick up a 1911 in 9 mm. Not so much because I want one to carry, but rather one to practice with. 9 mm ammo is a lot less expense (and lighter to transport) and I was wondering about two issues:
1. What impact will would it have practicing with a 9 mm 1911 and then carrying a .45 1911?
2. Is it economical and or practical to have a slide and barrel fitted to one of my existing 1911ís?