I don't know anything about AR's.... BUT I can tell you that the general advice is to CLEAN THE DARN THING before firing ANY GUN.... A short story: Several years ago, I was at the range shooting my single actions (yup, I'm OLD), when two or three young men came with three new rifles still in the box. I noticed, as they were unpacking, that they were AR type weapons, so I immediately began packing-up my gear and getting outta there. As I was leaving, one of the rocket scientists asked me if I knew anything about their rifles. I told him 'NO'. He said that they can't get a bullet in them.... any of the three. I went over (cautiously) to see what they had. He opened the action of one of them and I saw what looked like a piece of cardboard sticking out of the chamber. I carefully reached over and pulled on it. Out came about three feet of spiraled cardboard that evidently had been used as some sort of 'packing material' in the cardboard. ALL THREE of them had the same issue. I asked them to wait until I was on my way home before they loaded up and began blasting. YES, I recommend cleaning all firearms before firing..... No one can be so busy that they don't have time for a little housekeeping
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IMHO as always,
J.
