4 days ago I ordered a 18" 1/8 twist full rail upper from Larue Tactical. Much to my dismay I found that I'm in a very LONG line, about a year and a half before I see it. I've never been known for my patience so browsing BCM I ordered and will receive same length and twist with a Larue rail BCM upper tomorrow afternoon. Both went on the credit card, due to an impending wedding funds are a little tight. So my plan is to have the BCM paid off before the Larue is even out of the "gun room" . Anybody have any experience with either of these uppers? From what I know both are top tier companies.