I built an all new AR over the past year and finally took it out shooting last week. It ran great! But I did notice some weak ejection with federal brown box ammo, as in the brass fell in a neat little pile under the rifle on the bench. I looked closer and it almost appeared that there were some marks on the case around the rim (assuming that the extractor is being a little rough with the cases). I tried 3 different types of brass ammo and the rest made me search for the brass, but I am wondering if this is an issue or what you guys think. Bolt carrier is an AIM surplus nitride bolt carrier with the o-ring around the extractor spring. What do you guys think?
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