I am selling a factory PS90 sight. Overall in good condition with a few scratches here and there on the body. optic itself is in perfect condition. Black reticle and Red tritium. I have included some pics. Optic is about 3-4 years old. Asking 500.00 or best offer. I am new to this board but I have the same username on AR15.com you can see my feedback score is perfect. IM me or email me: paraevolution@yahoo.com