3rd maglula - they're all excellent, don't hesitate - Maglula LULA Rifle Magazine Speed Loader

I just realized I now own 3 different Maglula's. This one here if or AR style magazines, and it works perfectly, shifting the round between left/right inclination. The rounds set well, and I've loaded hundreds of rounds with 0 malfunctions, shooting grubby steel rounds.

I also have this for 9mm and then ruger's 22LR mags, and both work as effortlessly.

This AR style loader is 2x the value if you live in a magazine capacity restricted state. Since you're loading 10 or 15 round mags, these are better fits than tray loaders