I don't have any other relationship to the seller but he looks legit and the price is absolutely correct considering the scope mount. He seems to possess many of the areas such as the mounting block and spacer. Sign-0 Productions Firearms Coaching check it out at Sign-0.com Springfield Armory was https://mini14ebrstock18272.wizzardsblog.com/29521949/top-guidelines-of-m1a-socom-ebr