Got in a new 9mm that was fitted with a ATI Stock that appeared unfired, checked it out and fired about 200 rounds though it with almost no issues. Later when I cleaned the weapon I noticed a heavy coating of grease on the feed ramp. After properly cleaning weapon noticed that rounds would not feed but jam against the ramp. Found a small burr on the ramp that I polished out and now the ramp is smooth as butter but rounds still tend to jam against the ramp. Doesn't matter what mag I load , either stock 10rd or mp 15rd, so don't think that's an issue. Even tryed a light coat of 30 weight motor oil on the feed ramp out of desperation but still tends to jam.
So any suggestions?
So any suggestions?
