High quality picatinny offset; pricey - InfiTac 45 degree Offset Mount

It works, is very solid and stable, however is double the price of alternatives, some of which have a smaller footprint on the rail (2-3 slots vs this with 4 slots). That said, the arm length is long enough to clear controls (rifle) and the rail clamp is rounded on top to avoid interfering with most scopes. This will not work as a backup/alternate sight mount to a Romeo AMR reflex sight + magnifier setup due to clamp length unless you mount it pretty far down the rail. Overall, quality mount plate.