Can in the hand yesterday, so, anxious to try some quiet binary time. Have read recently about some end cap or baffle strikes on Obsidian 9 cans, but it seems to be all, or mostly all handgun issues. I haven't reached the end of the internet search results yet, though. Is it an issue on the MP5/AP5 platform with the tri-lug? Or the screw-on for that matter? Should I order an alignment rod to check things out before I light the fire?