Glock 20 & X300U Duty & Competition Holster

Glock 20 w/ Surefire X300U-A/B – Duty & Competition Holster

Designed for those who demand more from their gear, this holster is built to support the full-sized firepower of the Glock 20 paired with the Surefire X300U-A or B. Whether you're running drills, working a shift, or stepping onto the competition line, this single-level retention rig brings purpose-built performance to every draw.

Made from rugged Kydex and engineered for secure lock-up and consistent access, our duty/competition setup features open-bottom clearance, optimized sight channels, and precision-molded fitment for both the A and B variants of the X300U.

Built for Performance:

Fits Glock 20 with Surefire X300U-A or X300U-B

Compatible with red dot optics and suppressor-height sights

Adjustable retention for a consistent, confident draw

Open muzzle for threaded barrels or compensators

Works with popular competition and duty belt mounting platforms (Safariland, G-Code, Blade-Tech, True North Concepts, and more)

Why It Stands Out:

Tuned for high-stress performance

Molded from CAD-based files using the actual weapon/light combo

Ideal for 3-Gun, USPSA, light tactical duty, or armed professional applications

Hand-assembled and tested in the USA

If you're running 10mm with the X300U, you're not messing around—this holster keeps that same energy.

Information on the Surefire X300U-B light can be found HERE

Our preferred light option for this holster is the Surefire X300U-B light, which can be purchased from us HERE

Our Belt Attachment Blog Article explaining the different options can be found here:

4BROS Light Duty &  Competition Belt Attachments

*We strongly suggest you apply a removable thread locker to each screw of your holster after you receive it to prevent lost screws while the holster is in use.  

• Full Sweat Guard
• Adjustable Retention
• Profile cut to allow red dot sights
• Open Muzzle for threaded barrels and compensators
• Minimal material and smooth edges
• Proudly Made in the USA

• 4BROS Belt Slide
• Tek-Lok
• Sting Ray Belt Slide
• QLS Fork
• No Belt Attachment

OWB Belt Attachments Explained

Made in America. Founded, located, engineered, manufactured, and shipped from Northern Indiana.

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