i have a near new (was opened and mounted once, then removed) Larue BUIS that i'd like to trade for a same condition LMT BUIS.
it is a nice piece of equipment, but i forgot when i ordered it that my rifle has a screwy FSB. if it can't adjust elevation with the rear site, then a correct zero requires a tall front site post sticking above the ears of the FSB...
needless to say, there aren't many BUIS's that will work for me.
anyhow, the site is mint, and will come with the little adjusting wrench in the original packaging.
ETA: to clarify, this is the fixed rear buis.