Glock 20 w/ Surefire X300 – 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 X300U-A, X300U-B, X300T-A, or X300T-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 X300U-A, X300U-B, X300T-A, or X300T-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 X300 series light, 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.