IMI Defense RDL3 Level 3 Light and Red Dot Sight Holster for Glock

The IMI Defence RDL3 Level 3 Light & Red Dot Sight Holster for Glock has been developed for shooters, professionals and airsoft players seeking maximum safety, a quick draw and full compatibility with modern pistol configurations. Thanks to the combination of a patented Level 3 Retention System, an integrated Optics Shroud, support for various weapon lights and a robust glass-fibre-reinforced polymer construction, this holster delivers outstanding performance under the most demanding conditions.

Anyone switching from a standard holster will notice the difference not only in the secure retention, but above all in the ability to carry a Glock fitted with a weapon light, a red dot sight or both, ready for immediate use. It is precisely during intensive training sessions, skirmishes or professional use that the RDL3 ensures the pistol can be drawn quickly, consistently and safely.

Why choose a Level 3 holster?

A Level 3 holster is designed to provide optimum protection for the pistol against accidental loss or unauthorised drawing. Thanks to multiple active locking mechanisms, the weapon remains securely in place until the user deliberately unlocks it.

The RDL3’s patented Level 3 Retention System combines maximum safety with speed. A natural movement of the thumb releases the lock, automatically opens the red dot’s protective cover and allows the pistol to be drawn immediately.

Suitable for both weapon lights and red dot sights

The RDL3 has been specially developed for modern Glock configurations fitted with a weapon light, a red dot sight or both.

As the retention system engages directly with the pistol’s frame, its operation remains the same regardless of the configuration chosen. This means you can use the same holster with a standard Glock or a fully equipped setup without compromising on safety or speed.

Always check in advance whether your specific weapon light is included in the manufacturer’s compatibility list.

Integrated protection for red dot sights

The holster features an integrated Optics Shroud which protects the mounted red dot sight when the pistol is holstered.

This keeps the sight protected from dust, mud, rain, scratches and knocks. As soon as you draw the pistol, the protective cover opens automatically, so that the sight is immediately ready for use without any further action.

Fibreglass-reinforced polymer for maximum durability

The RDL3 is made from glass-fibre-reinforced polymer, a material known for its high strength and excellent wear resistance.

As a result, you benefit from a durable design that can withstand heavy use, impacts, scratches and harsh weather conditions. What’s more, the holster continues to function reliably at temperatures ranging from -40°C to +150°C, making it suitable for virtually any environment.

Adjustable fit for optimum retention

Every Glock may exhibit slight variations. That is why the RDL3 offers various adjustment options to fine-tune the fit.

For example, the holster is fitted with an adjustable tension screw, a barrel alignment pin and interchangeable spacers for different barrel lengths. This ensures that the pistol remains securely in the holster without any unwanted play.

Mid-Ride version for optimum comfort

This version is designed as a mid-ride holster, which means the pistol sits at a comfortable and ergonomic height.

This ensures a natural pulling motion, greater freedom of movement and a stable carrying position during prolonged use. The non-slip leg strap supplied prevents the holster from slipping whilst running or during other vigorous movements.

Suitable for various Glock models

This version is suitable for, amongst other things:

• Glock 17 (Gen 3–5)
• Glock 19 (Gen 3–5)
• Glock 19X
• Glock 22 (Gen 1–4)
• Glock 23 (Gen 1–4)
• Glock 25
• Glock 28
• Glock 31
• Glock 32
• Glock 45 (Gen 3–5)
• Glock 47
• ZEV OZ9 V2 Elite
• ZEV OZ9 V2 Elite Hyper Comp

Always check in advance whether your specific Glock model, weapon light and any red dot sight are included in the manufacturer’s compatibility list.

Practical insights that are often overlooked

Many users choose a holster solely on the basis of its compatibility with their pistol. In practice, however, it is the combination of a weapon light, red dot sight and retention system that determines just how practical a holster actually is. The RDL3 makes it possible to carry a fully equipped Glock safely without having to remove any accessories.

Furthermore, the importance of correctly adjusting the retention is often underestimated. By adjusting the tension screw correctly and using the right spacer, the pistol remains securely locked in place, whilst the trigger action remains fast and predictable.

Who is the IMI Defence RDL3 Level 3 Light & Red Dot Sight Holster suitable for?

This holster is an excellent choice for airsoft players, sport shooters and professionals looking for a high-quality Level 3 duty holster for a Glock fitted with a weapon light, a red dot sight or both. Thanks to its robust construction, innovative retention system and wide compatibility, the RDL3 is ideal for intensive use where safety, speed and reliability are paramount.

If you use a modern Glock configuration and want to combine maximum protection with a quick and intuitive draw, then the IMI Defence RDL3 Level 3 Light & Red Dot Sight Holster is an excellent choice.

Key features

• The patented Level 3 Retention System offers maximum safety and a quick, intuitive pulling action.
• Supports Glock configurations with a weapon light, a red dot or a combination of both without any adjustments to the retention system.
• The integrated Optics Shroud protects the red dot from dirt, scratches and impacts, and opens automatically when the trigger is pulled.
• Glass-fibre-reinforced polymer construction with adjustable retention, mid-ride design and compatibility with Safariland® mounting systems.

Common mistakes

A common mistake is to assume that every weapon light will automatically fit into the holster. Always check that the dimensions of your light and any red dot sight match the manufacturer’s compatibility information.

It is also important, after assembly, to adjust the retention correctly and to check that the pistol locks securely and can be drawn smoothly.

Frequently Asked Questions

Can I use this holster with a weapon light and a red dot sight?
Yes. The RDL3 has been specially designed for Glock pistols fitted with both a weapon light and a red dot sight.

Does the holster work without accessories?
Yes. The retention system engages directly with the pistol, meaning the holster functions fully even without a weapon light or red dot sight.

What material is the holster made of?
The holster is made from glass-fibre-reinforced polymer, making it highly impact-resistant, hard-wearing and durable.

Can I adjust the fit?
Yes. The holster features an adjustable tension screw, a barrel alignment pin and interchangeable spacers for different barrel lengths.

Is the holster compatible with Safariland® mounting systems?
Yes. The RDL3 is compatible with Safariland® mounting systems and comes with belt attachments for 1.5", 1.75" and 2" duty belts.

With the IMI Defence RDL3 Level 3 Light & Red Dot Sight Holster for Glock, you’re choosing a high-quality duty holster that combines maximum safety with support for modern pistol configurations. Thanks to its compatibility with weapon lights and red dot sights, and its robust construction, this holster is an excellent choice for any serious user.