I don't have any other link to the vendor but he would seem legit and the worth is unquestionably correct considering the scope mount. He appears to own every one of the parts such as the mounting block and spacer. Sign-0 Productions Firearms Training check it out at Signal-0.com Here https://sageebrforsale96295.fitnell.com/70274620/fascination-about-sage-ebr-chassis-for-sale