Advanced Switching Performance. SureFire continues its legacy of providing the best remote switching options for its line of combat-proven WeaponLights with the introduction of the RSR-SR07 remote switch. Designed for a seamless interface with our new SureFire XVL2 and XVL2-IRC WeaponLights, these switches provide easy, instant activation of lights or laser without requiring the user to alter the support-hand grip on the rifle. This model features momentary and constant on functionality.