Takes a little bit to understand how to use, the directions were not very clear. Once you realize how to use this (check out on youtube for instructions). It became instantly clear. I loaded 8 30 round magazines in under 15 minutes and my fingers appreciate this, as it was easy to load. Just pushing the lever in for 30 rounds (6 presses @ 5 each). The design of this is amazing, love how it works, love the ease of it, and love everything about this!