Say Uncle embedded a gun handling video and when I watched it, I thought that the skills were pretty good. When I went to AR quals last week, we talked about magazine changes and they showed me a technique I'd never seen.
Of course, I haven't been considered an operator in twenty years, but some of the skills are still applicable to an old cop in his autumn years. The technique is fairly simple. When you experience a stoppage, push the rifle away from you and rotate it so that you can see into the ejection port. If the bolt's back, you've run dry, so engage the magazine release with your trigger finger and snap the rifle, rotating it clockwise. This flings the magazine out of the rifle, emptying the mag well for a fresh one. With practice, it's pretty quick and the video shows the guys making mag changes with expert speed.
The best of all worlds would be for the magazine to drop free as soon as the release is pressed, but with the AR platform, that doesn't always happen. With the nine magazines I currently have, only two of them will drop free. However, this little technique will eject the most stubborn magazine I've found.
The fact that the video is set to Johnny Cash is a double-added bonus.
Hat tip to Say Uncle.