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.
