I looked for this in other threads but I couldn’t find anything, so please forgive this if it’s a redundant post. I am a relatively new owner of a SCAR 17 (about 200 rounds through it at this point) and it’s an amazing gun. I’ve never had any issues with it whatsoever until my suppressor got out of NFA jail. I am running a YHM Resonator R2 with QD muzzle brake. The ammo I’m using is Lake City M80 surplus. With the new muzzle brake I’ve had zero issues and the gun runs great, but as soon as I mount the suppressor and switch the gas block to the suppressed setting, it runs fine (although gassy and dirty) until the second to last round. When the second to last round is fired, the last round seems to pop up over the chamber and gets jammed between the bolt and the front of the receiver above the chamber. Does anyone have any suggestions on how to fix this? Happens with all three of my OEM mags. This is my first suppressor so I’m asking this out of ignorance. My first suspicion is that it may be over gassed, so I was thinking about changing out the gas jet for a smaller one, but I’d like to have some experienced input before I start chasing a problem that doesn’t exist. Thanks in advance for any pointers or advice.