This is the U-Loader by Podavach. I've tried a bunch of these type of magazine loaders. This one is very well thought out. It's light, small, handy and works like a charm with both AK and AR15 magazines in a host of calibers including .556, .223, 300 Blackout, 7.62x39, and others.

This magazine loading tool allows you to load any AK-47 or AK-74 magazine and even AR-15 standard magazine. It has little hash marks in the loading channel showing you where to stop putting the rounds based on the magazine that you’re using. This is a very interesting little device.

One of the big things about this loader - it will not only load your AR-15 magazine but also your AK-47. It’s a very easy system. I’ve done some reviews on a couple of different lading boards but this is the original.