I have 4 Aimpoint mount rings. They fit the M2/M3, 9000 series scopes, as well as any other scope that takes a 30mm ring. They are the X-Wide rings that measure at 1 1/8", heavy made, but light weight. From what I've found on the net they sell for around 65.00, am wanting 25.00 each. These are new, and never have been mounted/used.