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Palmetto-Pride · August 22, 2012, 03:12 AM

Well it sounds like the bolt is not wanting to rotate and unlock from the chamber. (I had my M&P15 do this occasionally when using steel case ammo I never could figure out what it was about the steel cased ammo that was causing the problem) Have you tried to manually run some rounds thru it with a full magizine to see if any get stuck? Also have you tried to lightly let the charging handle go forward just to see how easy it is for a round to go into battery? You may have to lightly push on the FA, but you shouldn't have to jam on it to get into go into battery.

August 22, 2012, 03:12 AM	#6
Palmetto-Pride Senior Member Join Date: May 31, 2009 Location: Charleston, SC Posts: 2,071	Well it sounds like the bolt is not wanting to rotate and unlock from the chamber. (I had my M&P15 do this occasionally when using steel case ammo I never could figure out what it was about the steel cased ammo that was causing the problem) Have you tried to manually run some rounds thru it with a full magizine to see if any get stuck? Also have you tried to lightly let the charging handle go forward just to see how easy it is for a round to go into battery? You may have to lightly push on the FA, but you shouldn't have to jam on it to get into go into battery.