Collection: Glock 20 Holsters

Holster Solutions for the Glock 20’s Size, Power, and Purpose

The Glock 20 chambered in 10mm offers serious ballistic performance for hunting, defense, and backcountry carry—but its size and weight bring specific challenges for everyday carry and field use. This holster collection solves those problems with purpose-built designs that support all Glock 20 generations, including the Glock 20SF with its reduced grip circumference.

Designed Around the Full-Size Glock 20 Frame

Each holster in this collection is molded for the Glock 20’s full-length slide and double-stack frame. Whether you carry Gen 1–4 or the Glock 20SF, you’ll find retention fitment that balances secure hold and smooth draw—without unnecessary bulk or slide contact points that slow reholstering.

Comfort-Focused for High-Recoil, Large-Frame Pistols

With a full magazine of 10mm, the Glock 20 becomes a heavy pistol. Our IWB and OWB holsters use weight-distributing designs to reduce pressure on the beltline or chest harness. Materials like soft neoprene backing and adjustable belt clips help maintain all-day comfort, whether you're seated in a vehicle or hiking through steep terrain.

Options for Backcountry, Field, or Everyday Carry

We offer holsters that match how Glock 20 owners actually carry—from chest holsters for wilderness travel, to drop leg rigs for quick draw outside the waistband, to hook and loop mounts for backpack or off-body access. Each platform keeps your sidearm accessible and retained, no matter your environment.

Low-Profile IWB Options for a Large Sidearm

While the Glock 20 isn't known for ease of concealment, our inside-the-waistband holsters provide a deep carry position and adjustable cant to help reduce printing under clothing. Paired with a quality belt, these holsters give you practical concealment for a powerful full-size handgun.

Retention That Supports Confident Carry

Retention is especially important when carrying a heavier pistol. These holsters allow user-adjustable passive retention, so you can fine-tune draw resistance whether you're open carrying, hiking with a pack, or moving through close terrain. Optional shell swaps support consistent retention across compatible Alien Gear platforms.

Whether you're carrying a Glock 20SF for duty, a standard Gen 3 Glock 20 for defense, or heading into bear country with a loaded 10mm, these holsters support your platform with secure fit, adaptable carry styles, and day-long comfort. Built for carriers who demand more than just compatibility—they want performance that holds up in real conditions.

Will these holsters fit both the Glock 20 and Glock 20SF?

Yes. Holsters listed for the Glock 20 accommodate both the standard frame and the Glock 20SF variant. The SF model has a shorter front-to-back grip, but slide and trigger dimensions remain compatible.

Can I conceal carry a Glock 20 with an IWB holster?

While the Glock 20 is large for concealed carry, IWB holsters with deep ride height, adjustable cant, and proper belt support can make it manageable for some users—especially in colder climates or with a loose cover garment.

What’s the difference between Glock 20 and Glock 20SF for holster fit?

The Glock 20SF has a slightly smaller grip circumference, but the slide and rail dimensions are the same. As a result, most molded holsters for the standard Glock 20 will also fit the SF model securely.

Are there holsters for the Glock 20 with a Streamlight TLR-1?

Yes. Select models in this collection support the Glock 20 equipped with a TLR-1. These holsters are molded for proper clearance and retention, so the weapon light won’t interfere with secure carry or draw function.

What’s the best carry position for a Glock 20?

That depends on your intended use. For concealment, IWB or appendix carry may work with the right holster and wardrobe. For outdoor or backcountry use, chest holsters and drop leg options provide excellent access and weight distribution.

Do Glock 20 holsters support adjustable retention?

Most holsters in this collection include adjustable passive retention, allowing you to fine-tune the draw resistance for personal comfort, gear setup, and activity level.

Can I open carry a Glock 20 with these holsters?

Yes. OWB and drop leg styles are well-suited for open carry, especially when retention and draw speed are a priority. These options work well for range use, backwoods carry, or open-carry jurisdictions.

Do you offer chest holsters for the Glock 20?

Yes. The chest holster option is ideal for outdoor use, especially when carrying a full-size 10mm sidearm in bear country, on a trail, or while wearing a backpack that limits waistband access.

What kind of belt should I use with a Glock 20 holster?

Because of the weight of a loaded Glock 20, we recommend a rigid gun belt designed to support full-size pistols. This will reduce sagging and improve holster stability for both IWB and OWB carry.

Are the holsters compatible with optics or red dots?

Standard Glock 20 models don’t include an MOS cut, so most holsters here do not feature optic-ready clearance. If you’ve had your slide milled for a red dot, please verify fitment with your specific holster model before purchasing.