I am designing up a new custom front sight for my KT SU-16A and I am looking to buy a couple of good used threaded front sight posts for an AR 15 as well as the adjusting tool. I'm looking for posts like this one. They are available from Midway, but I was hoping someone might have some posts and an adjusting tool laying around that they want to get rid of. I am also looking for a good used metal factory KT peep sight or buckhorn sight also, or another make of adjustable rear sight that has an a base surface to centerline height of around .4 inches and mounts on a picattiny rail. I could use a slighty higher rear sight also as I will just machine up my new front sight to work with whatever height it is.