SureFire X400UHARD X400UH-A-RD Ultra Masterfire Black Anodized 1000 Lumens White LED/Red LaserDraw With Maximum Efficiency. If your pistol is equipped with a SureFire X400UH A RD, you have a clear advantage. The X400UH A RD is engineered to fit virtually any rail equipped pistol and interface with SureFires revolutionary MasterFire Rapid Deploy Holster. It locks securely into the MasterFire, securing the weapon at an advantageous angle for quick deployment and can be set to automatically activate the light and the laser when the weapon is