This speed loader is for the KEL-TEC PMR-30 hand gun. As you load rounds in the magazine they get harder to push in with your fingertips. This loader will help get all 30 rounds in the magazine without making your fingers sore. Just place the loader on top of your magazine when the rounds start getting too hard to push down. The double action slide on top of the loader will save a step by seating the round after pushing it down. Also available: PMR-30 single action speed loader that is a slightly more affordable version.