You guys have totally ruined me. I found a few "BLOOPERS" in this video. His 601carrier wasnt actually a 601 (no full round key). His upper on his 601 didnt have the wedge shape where the charging handle slides in. The front sight wasnt the flat type (forged?). I dont belive the buttstock was an "A" model. No horizontal line pattern on the magazine release. No "no number with only an arrow) on the sight wheel. See what you guys have done to me? (I AM NOW TOTALLY ANAL). He did admit that the lower, and the flash hider wasnt correct though. Dont get me wrong,,,,I thought it was an awesome video! I did learn plenty! What a great video to refer to for some of the diagnostic problems that we run into (timing / dwell / corroded chamber / etc) I wish he had more videos, covering some of the carbines. Thanks for sharing, Ive never seen this one.