RD3™ Level 3 Red Dot Sight Retention Holster for Glock

The IMI Defense™ RD3™ Level 3 Red Dot Sight Retention Holster is a next-generation tactical holster engineered for professionals who demand superior firearm retention, optic protection, and operational versatility. Designed for military, law enforcement, and tactical shooters, the RD3™ combines advanced retention technology with rapid deployment and compatibility with today’s most popular red dot optics.

Constructed from highly durable glass-filled reinforced polymer, the RD3™ is built to perform in the harshest operational environments. The patented Level 3 thumb-activated retention system secures the firearm while allowing an immediate, instinctive draw with zero delay when speed matters most.

A defining feature of the RD3™ is its integrated optic protection shroud. With a single natural thumb press, the optic cover flips open while simultaneously disengaging the retention mechanism for a smooth and uninterrupted draw stroke. The holster can also be used without an optic installed, as the retention system locks independently onto the firearm itself.

The adjustable barrel alignment system and removable barrel spacer allow compatibility with multiple Glock frame lengths, while the integrated tensioning bushing provides a secure, rattle-free fit. The included non-slip duty thigh strap enhances stability and comfort during active movement and operational use.

Finished with a low-reflection matte texture, the RD3™ minimizes glare while resisting scratches and scuffs. Engineered for extreme durability, the holster maintains structural integrity in temperatures ranging from 150°C to -40°C.

The RD3™ comes configured in a modern mid-ride setup, offering a more compact and comfortable alternative to traditional drop-leg systems while maintaining exceptional accessibility and control.

Patent Pending.

Features & Benefits

• Level 3 retention holster designed for red dot optics
• Patented thumb-activated dual-retention system
• Integrated optic protection shroud with automatic flip-open operation
• Smooth, rapid firearm draw with zero disengagement delay
• Compatible with pistols with or without mounted optics
• Constructed from highly durable glass-filled reinforced polymer
• Low-reflection matte texture finish for reduced visibility
• Scratch and scuff-resistant surface
• Extreme temperature resistance from 150°C to -40°C
• Adjustable tensioning bushing for rattle-free firearm retention
• Barrel alignment pin system for multi-length firearm compatibility
• Includes non-slip duty thigh strap for enhanced stability
• Mid-ride configuration for improved comfort and mobility
• Compatible with Safariland® mounting options
• Fits 1.5", 1.75", and 2.00" duty belts
• Right-hand configuration
• Made proudly in Israel

Optics Compatibility

Compatible with many popular red dot optics, including:

• Trijicon RMR
• Trijicon SRO
• Leupold DeltaPoint Pro
• SIG Sauer Romeo1Pro
• Bushnell RXS-250
• Other similarly sized optics

Compatibility Notes

The holster includes a removable rubber barrel sleeve:

• With sleeve installed: Fits Glock 19 variants
• Without sleeve installed: Fits Glock 17 variants

The sleeve is pre-installed from the factory and can be removed easily without special tools.