Just a note, I picked up a 16" DD mid length from BCM not too long ago, it was hammer forged, chromolined everything I wanted in a bbl. I think BCM pinned the front sight with the gas tube on it though (maybe even came from DD this way), which again is what I wanted. When I got mine, BCM also had the stripped DD midlength bbls also.

I am still piecing mine together so I cannot say how it shoots yet , there is a gunshow this weekend so I hope to pick up what I need to finish it off.