i encountered an ar that when pulling the charging handle, no scratching sound nor the sound of the bolt travelling the upper can be heard. how was this done?
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i encountered an ar that when pulling the charging handle, no scratching sound nor the sound of the bolt travelling the upper can be heard. how was this done?
lots of lube?
I have also heard of a manufacturer making a charging handle of high quality delrin...
what brand of rifle? POF uses NP3 finish on their BCG and it is smooth and noiseless.
just a plane ordinary rifle.
Ditto, That is the way all of mine are. I have a DDM4, a RRA mid length, and a Stag 2T. They all are very smooth now. It just takes lubing generously, cleaning after a few hundred rounds, and shooting a lot with lube. The lube is what makes them "run in" well. I have seen ARs in the shops and most all of them are very gritty from the factory. My DD and my Stag are the only two out of the 6 I have owned that were brand new. Of those, the Stag was the grittiest, but cleaned up nice after 500 rounds over 3 trips to the range with cleaning and generouse lube in between. The DD came to me pretty smooth and got smoother as I fired it. I only have about 300 through it, but it is already smooth. My RRA has had an unknown number through it, it is the one I grab for the golf cart trips, armadillo hunting, and my HD gun. I bought it from a gunsmith friend of mine and I don't know the round count on it when I bought it. Probably less than 100. I have personally fired a case through it and it too is very smooth. It is not hard to do, just clean the charging handle and track really well, and then lube. I think that is where most of the grit feeling comes from.
I agree with quib and eng208.
I had a new build that was really gritty feeling but after about 500 rounds, it has smoothed out significantly. I expect it will get better.
I think shooting it is the solution.
My M-4 I carried in the Army was like that. I don't have a clue why it was.
Every weapon needs a break-in period. As to how many rounds, depends on the tolerances for that particular weapon. in most cases, about 500 "hot" rounds (American Eagle, LC, Hornady, etc.) should be pretty good for most AR rifles.
I was impatient with a rifle once and put some bore paste on the bottom BCG rails and cycled it a few times. Slicked her right up.