Glock 20 and Glock 20SF Holsters - Secure Carry for Full-Power 10mm
The Glock 20 is a full-size 10mm Auto pistol with a 4.61" barrel, 8.07" overall length, and approximately 39 oz loaded weight with a 15-round magazine.
Available across Gen 3, Gen 4, and Gen 5 variants, the Glock 20 delivers substantial stopping power in a large-frame package designed for hunting, backcountry defense, and duty applications where maximum power is required.
The Glock 20SF (Short Frame) shares identical slide dimensions but features a reduced grip circumference and shorter trigger reach, making the pistol more manageable for shooters with smaller hands while maintaining the same capacity and ballistic performance.
Glock 20 and Glock 20SF Holster Compatibility Overview
This collection supports three configurations:
- Glock 20 (Gen 1-5) - Standard full-size grip frame across all generations
- Glock 20 (Gen 1-5) with Streamlight TLR-1 - Light-bearing configuration with duty-grade weapon light
- Glock 20SF - Short Frame variant with reduced grip circumference
Each holster is precision-molded to the Glock 20's large-frame slide profile, dust cover dimensions, and trigger guard geometry. While the G20 and G20SF share slide dimensions, the SF variant's slimmer grip changes how the frame contacts the body during carry—though both variants typically fit the same holster shells, since retention and fit are primarily indexed to the slide rather than grip circumference.
Note:
The Glock 20 is a large-frame 10mm pistol with distinct dimensions from 9mm/.40 S&W Glock models. Generic "full-size Glock" holsters may not fully support the slide or may leave portions of the trigger guard exposed. Only holsters specifically molded for the G20/G21 large-frame series provide proper fit, retention, and trigger coverage.
Light-bearing holsters are molded around the exact light body dimensions. Using a light-bearing holster without the specified light installed will result in loose fit and inadequate retention. Similarly, attempting to use non-light-bearing holsters with weapon lights attached will cause binding, incomplete seating, or retention failure.
Which Glock 20 Do You Have, and Will It Fit?
You picked up a Gen 5 and now you are wondering whether "Gen 5" and "MOS" are two different holster searches, or whether your 20SF needs something the standard G20 does not.
Here is the short version.
A holster grips the slide, trigger guard, and dust cover, and that large-frame profile is shared across the G20's life. Gen 3 and Gen 4 take the same holster.
The short-frame 20SF trimmed the grip circumference but left that profile alone, so a G20 holster fits your 20SF with no separate part to buy. The Gen 5 added an ambidextrous slide stop and the Gen 5 grip texture, which is why a ShapeShift build moves up to the Gen 5 shell, while every Cloak model still fits as-is.
One thing to know going in: the Gen 5 G20 ships only as a Gen 5 MOS, so "Gen 5" and "Gen 5 MOS" are the same gun. The only question that actually changes your holster is whether you run a red dot, and if you do, the Photon clears it on supported builds.
Confirm shell generation and optic clearance on the product page and the fit lines up.
IWB and Appendix Carry for Your Glock 20
Concealing a full-size 10mm is a tougher ask than hiding a compact, and you feel it first at the waistband.
The G20's length and loaded weight pull on a thin belt and dig into the hip after a few hours, so the holster that felt fine in the morning is the one you stop reaching for by the end of the week. Comfort here comes down to spreading that weight and keeping the gun tight to the body instead of letting it lever away every time you move.
For all-day inside-the-waistband carry, the Cloak Tuck 3.5 backs the holster with a CoolVent neoprene panel across its full width and a spring steel core that holds the heavy 10mm without sag, with cant and ride height you set by hand.
If you would rather have a rigid molded shell with a hard retention click, the ShapeShift 4.0 IWB is the place to start, and it opens the modular system. Appendix carry with a gun this size punishes a bad angle, so the ShapeShift Appendix Holster uses forward-cant geometry built for the 1 o'clock position rather than a strong-side shell tipped forward, which is what keeps the muzzle from jabbing the second you sit down.
OWB Belt and Paddle Carry
Some days the 10mm rides better on the belt than in it. Pull a jacket or an untucked flannel over the grip and outside-the-waistband carry takes the weight off your waistband and onto a wider platform, which most G20 carriers find easier through long days and long drives.
For a belt mount that holds its spot, the Cloak Belt Holster rides on your loops without shifting or letting the heavy slide flag. When the holster has to come on and off between the truck, the office, and the range, the Cloak OWB Paddle pulls on and off without unthreading a belt, and the ShapeShift OWB Slide and Paddle do the same on the modular shell.
Every one of them is set up for the 10mm's weight, so a loaded G20 sits where you put it instead of dragging the mount down.
Field Carry: Chest and Drop-Leg Holsters for Glock 20
This is the gun people buy for the woods, and the waistband is exactly where it gets in the way out there.
A pack hip belt, waders, a climbing harness, or a layer of rain gear buries the beltline, and a holster you cannot reach in a hurry is no holster at all when the reason you are carrying a 10mm is a bad encounter on the trail.
The fix is to bring the G20 up where your hands already are. The Cloak Chest Holster rides on a 3-point harness that fits over a jacket or a pack up to a 60-inch chest, carries at a 45-degree cant for a natural draw, and clears a light or an optic on confirmed G20 configurations, which is the setup hunters and anglers actually wear in bear country.
When you would rather keep the gun on your leg, the Cloak Swivel Drop Leg and ShapeShift Swivel Drop Leg drop it to thigh level on a swivel that moves with your stride instead of slapping against it. Either way, the 10mm stays accessible when your waist is busy doing another job.
Light-Bearing and Optics
A 10mm in the backcountry earns its keep at dawn and dusk, which is exactly when you want a light on the rail and a dot in the window.
The trouble most holsters create is making you pick one carry style for the light and another for the optic. The Photon takes a mounted weapon light on confirmed configurations and clears a red dot on supported optics-ready builds, and it converts between IWB and OWB on the included hardware, so the same holster covers the truck gun and the trail gun.
If you run the Gen 5 MOS with a red dot but no light, that same optic clearance is what you are after. For a light and a dot together on a chest rig, the Cloak Chest Holster supports both on confirmed G20 setups.
The ShapeShift Modular System
You buy a holster for how you carry now, then the season changes and you are buying again.
The ShapeShift Core Carry Pack starts you with IWB and OWB Paddle holsters, the shell, and the hardware, and every expansion pack after that adds a carry position on the shell you already own, so a new way to carry the G20 means a new mount, not a whole new holster.
One limit to know before a light build: the ShapeShift does not take a weapon light, because the shell wraps the trigger guard and dust cover tightly enough to block a mounted WML. For a G20 that wears a light, the Photon is the holster that carries it concealed or on the belt.
Key Decision Factors
- Gen 3 or Gen 4: any Cloak or ShapeShift model fits; ShapeShift uses the shared Gen 3/Gen 4 shell
- Glock 20SF: same holster fit as the standard G20, since the short frame changes grip size, not the holster profile
- Gen 5 or Gen 5 MOS: these are the same gun, since the Gen 5 ships only as MOS; Cloak fits as-is and ShapeShift uses the Gen 5 shell
- Running a red dot: the Photon clears the optic on supported builds, or the Cloak Chest Holster on a chest rig; confirm your optic on the product page
- Running a weapon light: the Photon for concealed and belt carry; the ShapeShift does not support weapon lights
- Backcountry, hunting, or bear defense: the Cloak Chest Holster for over-a-pack carry, or a Cloak or ShapeShift Swivel Drop Leg
- All-day concealed carry of a full-size 10mm: the Cloak Tuck 3.5 for weight-spreading IWB comfort
- Left-hand carry: available across every line, selected at the product level during checkout
Common Glock 20 Holster Questions
What is the best Glock 20 holster for concealed carry?
The best Glock 20 holster for concealed carry depends on your priority. For all-day comfort, the Cloak Tuck 3.5 IWB spreads the weight of the full-size 10mm on a neoprene backer so it does not dig in by mid-afternoon. For a rigid shell with a hard retention click and room to add carry positions later, the ShapeShift 4.0 IWB is the move, and the ShapeShift Appendix Holster handles 1 o'clock carry with purpose-built geometry.
What is the best IWB Glock 20 holster?
The best IWB Glock 20 holster for all-day wear is the Cloak Tuck 3.5, which pairs a spring steel core with a CoolVent neoprene backer so the heavy 10mm rides secure without becoming a hot spot, with cant and ride height that adjust without tools. For a dedicated retention lock with an audible click, the ShapeShift 4.0 IWB is the alternative and opens the modular system.
What is the best OWB Glock 20 holster?
The best OWB Glock 20 holster comes down to whether it stays on the belt or comes on and off. The Cloak Belt Holster holds position under the weight of a loaded G20 without flagging the grip, while the Cloak OWB Paddle and the ShapeShift OWB Slide and Paddle attach and detach without threading a belt.
Does a Glock 20 holster fit the Glock 20SF?
A standard Glock 20 holster fits the Glock 20SF, because the short frame trimmed only the grip circumference and kept the same slide, trigger guard, and dust cover that a holster grips. Every Cloak and ShapeShift model molded for the G20 fits the 20SF, with no separate part to buy.
Is a Glock 20 Gen 5 holster the same as a Gen 5 MOS holster?
A Glock 20 Gen 5 holster and a Gen 5 MOS holster are the same holster, because they are the same gun: the Gen 5 Glock 20 ships only as a Gen 5 MOS. The only thing that changes at the holster is whether you have a red dot mounted, and if you do, the Photon clears the optic on supported builds.
Will a Gen 3 or Gen 4 holster fit my Glock 20?
A Gen 3 and a Gen 4 Glock 20 use the same holster, since they share the same external profile. Every Cloak model fits both and the ShapeShift Gen 3/Gen 4 shell covers both. The Gen 5 moved to its own ShapeShift shell because of the ambidextrous slide stop, while Cloak models still fit across all three generations.
Is there a Glock 20 holster with a light, or a light and a red dot?
A Glock 20 holster that carries a weapon light, a red dot, or both is the Photon, which takes the light on confirmed configurations and clears the optic on supported optics-ready builds while converting between IWB and OWB. For a light and dot together on a chest rig, the Cloak Chest Holster supports both on confirmed G20 setups. Confirm your specific light and optic on the product page.
What is the best Glock 20 holster for the backcountry or bear defense?
The best Glock 20 holster for the backcountry is the Cloak Chest Holster, which carries the 10mm on a 3-point harness over a jacket or a pack at a 45-degree cant and clears a light or optic on confirmed setups, the way most hunters and anglers run it in bear country. When you would rather keep the gun on your leg, the Cloak Swivel Drop Leg or ShapeShift Swivel Drop Leg brings it to thigh level on a swivel that moves with you.
Are left-hand Glock 20 holsters available?
Left-hand Glock 20 holsters are available across every line, selected at the product level during checkout. Whether you carry IWB, OWB, on a chest rig, or on a drop-leg, the same model is offered in a left-hand configuration.
