I bent the back end (where they grab the bullets so to speak) of the feedlips slightly upwards, about 1/16" to 1/8". You can use any tool you want, I used a locking plier, snugged it down to fit the lip and clamped it down. Take a look at the original Scar mag to get an idea. You can see that the feedlips are slightly higher when you look at it straight from the side. Please do one mag at a time man! Good luck to ya!