My speed loader works wonderfully with both AR/M4, and AK style 5.56 magazines. I was amazed how quickly 30 could be loaded. This is especially useful when I recently went to the rifle range. I loaded nearly 10 magazines so quickly and easily. I recommended the loader to my friends the next day. If you frequently use your rifle, or just want to save time by easily loading your magazines, I think you should get one.