I already got rid of it, but now my buddy's got it. I very clearly explained the FTE's that I kept having problems with, but he figured as cheap as I sold it to him, he could put some money into getting it fixed. Now the question is, what is involved in reaming out his chamber to a true 5.56 chamber (don't know if it's too tight, too rough or both, but I figure reaming it with a 5.56 reamer should fix it, right? How do you use these reamers, I've seen them for rent on this site? How do you know how far to ream, and how do you keep it where it needs to be (keep it dead center on the bore)? I'm just taking a shot in the dark here, he hasn't gotten a lower yet to put the upper on, but I figure he'll have the same problems I did. I knew I could PROBABLY fix it, but would rater put my cash in a J&T