This is a target rear sight for the M96 (maybe m55?) series of rifles. I have tried to use it with little success as I lack the correct front sight for it to work. It looks good and I have pics avaialble for those interested (send them e-mail to you). These sights are hard to find and I have seen them go for $60. I would like to trade for AR accessories:
1. 6 used good condition USGI 30 round magazines
2. Used 1" scope mounting system for flat top
3. m7 bayonet with scabbard
4. anything else interesting........