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I've got about 10 cartridges that look EXACTLY like that!
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You and about 10 thousand other guys.
Honestly... there is no easy, one size fits all cure. BCG weight and mechanical resistance, magazines, gas pressure and recoil spring pressure... any and all can be contributors. I have many decades of AR "experiences", but I can't, with any easy certainty, diagnose your problem... only offer possibilities.
If you do a "suppressed AR15 FTF" search on the internet, you'll find lots of valid links with possible causes. That photo came from such a AR15.com thread.
Good luck sorting it,
C