Thanks, Troy. I just wanted to confirm what I already believed to be true. I e-mailed the gun shop owner yesterday and told him I was pretty sure that he had an illegally-assembled rifle and that he should invesigate further and take action if necessary. I doubt if anyone would know, but since it is on display in his shop, it is possible. I would hate to see him burned by the BATF. I just hope that he didn't get screwed out of a lot of money for it at a gunshow somewhere, as he frequents them often.