So, I had bought some Enhanced PTS EPM 150 round Mid-Cap Magazine (2023 Gen) from UA a while back they had also built my BCM superbly, so it was shooting pretty fast & I started to have feeding problems I tried everything to fix the problem & wasn't getting no luck. I came in to speak with Jordan personally & he gave my gun a check & told me since the gun is shooting fast, you'll need a magazine that can keep up with it. He told me about these spacers they offer I tried it on my gun & what do you know my gun was working fine again it did take a couple games in order to stop the misfeeds. What I did was take the spring out & let it sit all week & then put it back with the spacer & I was back in the game on binary destroying everything!! Get you some of these they work if you have a fast build, you'll need them!!