Broke after 3 rounds - Live Free Armory Completed LF19 Raptor Slide with RMR Cut

Title says it all. Mounted an optic and took it to the range to zero the optic and see how the slide ran. First three rounds of Winchester white box 115gr were fine but the fourth failed to extract and had to be removed by pushing a cleaning rod down the barrel. Fifth round did the exact same as the fourth so I called it a day and later disassembled the slide to find the ejector plunger is lodge in the gun and will not come out without considerable force. While stripping the slide I also noticed the fiber optic part of the front sight was missing. After reviewing the pictures I took of the stuck rounds for this review I can see the rim is not stripped off so its unlikely an ammunition problem. I ran the same Winchester white box ammo through a Glock 19 and a Lone Wolf Glock clone the same day with zero issues.