congrats on the purchase! they dont make that model anymore. my brother has one and has been looking for a while. thompson center has a quick release duo=ring system but you need 3 pieces to make a complete mount. it is kinda confusing. you need the base-quickrelease base and then the rings. another option would be to just get the regular mount(non quick release). you have to take the rear site off i believe. give thompson center a shout. also cva makes a universal type bases with holes that line up to many different models.