This is an older model Aimpoint red dot site. I had this mounted to a pistol but recently went back to iron sights. It is in fair shape and has served me well but i no longer need it. I find it's construction to be better than most economy red dot sites made today. It has a nine position dot intensity dial and a polarized filter. I don't have any pictures of it on my computer but here is a link to show what it looks like and it's features..... http://www.aimpoint.com/o.o.i.s?id=46&prev_id=46&product_id=75 I'd be interested in trading for some .223rem, 45 acp or a powder measure. Otherwise I'd take $50. I'd prefer ftf local pickup unless you've got a really good trade. Btw. If anyone is interested in mounting this to a Ruger mkII- 22/45 i could thow in a B-square mount as well.