Set yourself up for success for both long-range and short-range shooting by adding a 45 degree offset reflex sight to your scoped rifle. This universal 45 degree offset mount offers the ability to retain your scope and add a reflex sight to the 1913 top rail of your scoped rifle. Compatible with most reflex sights including- SIG SAUER- ROMEO1T, ROMEO1PRO, ROMEOZERO, ROMEO2, ROMEO3, ROMEO3MAX, ROMEO3XL. TRIJICON RMR,SRO.LEUPOLD DELTAPOINTPRO. HOLOSUN 507C,407C,508T.