WHERE CAN I BUY A GLOCK 30 ONLINE OPTIONS

I do pass up the excellent sensation Gen4 grip and the slightly milder recoil with the thicker slide and barrel however the lighter pounds and sense of your G30S for me greater than tends to make up for it...Perhaps a dumb problem, but may be the 30s as solid as the opposite variations from the 30 with regard to loading with hot .45ACP rounds?I wis