Thumb-activated retention follows Master Grip Principle Fits Streamlight TLR 1 and 2 Low-friction internal material for smooth and effortless draw Sound-dampening lining for stealth drawing and holstering Durable material provides protection with sleek design for minimal bulk Includes Jacket Slot Belt Loop attached to holster. Quick Dual Release (QDR) Belt Loop and 2-Slot Belt Loop sold separately Compatible with Trijicon RMR/SRO, Leupold Delta Point Pro, Sig Romeo1Pro, and other similar sized optics Additional rotating dust cover to further protect optics from impacts and debris Dust cover is removable if desired With its streamlined thumb-activated retention, the T-Series RDS holster keep your firearm at the ready while maintaining total security.