Another thought, the S&W M&P45 is about the same width as a .45, but you can get 10rd. and 14rd. mags for it.
At the moment mine has 951rds. through it, a vast majority were the filthy "TulAmmo", and zero cleaning. Zero failures. Not even a single failure to feed or failure to eject. 49 more rounds and I will clean it and send Smith and Wesson a nice email. lol