Can fit 20
Yes it does fit +5, by hand or speed loader. I wouldn’t recommend putting 20 in if you plan on reloading your weapon with that mag. You have SLAM it in your pistol, with 19 it feels completely different than with 20 while reloading, noticeably more tension put on the mag release when 20 are in as well. It may not fit 20 the first time as well. Very high quality, easy to install, and they work pretty well. No malfunctions through hard use, black coating doesn’t seem bad, it still looks good all scraped up. I would definitely recommend!