Finally after a few years of trying to rat-hole away some cash from too many other projects; looks like i should finally be able to fund a dedicated Colt 5.56 upper to go with my LE901-16S in the next few weeks. My plan has always been to get one of the LE6940CK complete upper kits, so as to match the 901's Monolithic upper and gas block sight, and case it all up together. But just my luck, they seem to have dried up. I do have a line on a couple of the LE6944CK uppers. Looks the same just with a 14.5" barrel . But If I went this route I would have to Pin/Weld a muzzle device and I'm on the fence about doing that for this Colt Kit I've been piecing together for years. Uhhhg !!!!! I have a few 6920's around and some custom builds with 14.5 pinned barrels and do like how they shoot. To keep searching for a New 6940 upper, or go with the 6944 for a more balanced firing cycle, but with a pin on muzzle device ? Decisions. Hahaaa.