I hope this isn't like a "duh" type question.... but I just bought my first AR, a xm whatever the hell post ban one from bushmaster (NY = no good stuff). anyway, i picked up at the FFL and drove out to the range, literally opened the box at the range
random the first clip or two i noticed was putting the brass on the bench like 6 inches next to the rifle, but by say the 10th, they were flying at least a bench across from me, is that due to the factory grease or something slowing the bolt or ejector or something?
also whenever i shoot it makes a springy type noise, but i have a fixed stock, it sounds like it would almost be a collapsable stock spring or something. i dont know if this is normal because ive never shot or owned an AR before, but just wondering. the last shot when the bolt stays open doesnt make the noise though. so is this normal?