It's a real hassle to get a 2011 style optic mount centered over the slide, so I recommend a Czechmate mount (Matt Cheely used to make one, but I don't see it on his site anymore) or a Tanfoglio one, choose your hole pattern carefully because you'll be stuck with it!, mag wells, bases, etc. come from CZ Custom: http://czcustom.com/cz75magwellidpa.aspx