Best Holster for Glock 21

I’m a gun owner and I know how important it is to find the right holster. That’s why I’ve compiled a list of six holsters that are perfect for your Glock 21, whether you’re looking for something simple or tactical. Whether you carry concealed or open, these holsters will keep your weapon secure without sacrificing comfort!

Concealment Express IWB KYDEX Holster fits S&W Shield 9/40 (Incl. M2.0) | Right | Black
25,877 Reviews
Concealment Express IWB KYDEX Holster fits S&W Shield 9/40 (Incl. M2.0) | Right | Black
  • INSIDE THE WAISTBAND KYDEX HOLSTER fits: Smith & Wesson SHIELD 9/40 (Incl. M2.0) (ONLY unless Specified). Our minimalist IWB holsters are designed to be worn comfortably inside the waistband with an untucked shirt for proper concealed carry. We use .08” KYDEX precision formed over our proprietary in house CAD designed and crafted Aluminum molds. This ensures unparalleled consistency, fit, quality, durability, lightness, comfort, & uniform features across all of our holsters.

I carry my gun every day and like most folks who do this, I wear out at least one holster per year. It’s really hard to find a comfortable holster so when we found the 6 best holster for Glock 21 we were stocked. These holsters don’t sacrifice safety and security which was an absolute must in our search but they also didn’t break the bank. 

Table of Contents

If you are in a hurry to purchase the best holster for Glock 21, and you want to make the best decision, here are our top 3 picks:

Top 3 Best Holster for Glock 21

6 Best Holster for Glock 21 (Ranked And Reviewed)

1. Concealment Express IWB Kydex Holster

Concealment Express IWB KYDEX Holster fits S&W Shield 9/40 (Incl. M2.0) | Right | Black
25,877 Reviews
Concealment Express IWB KYDEX Holster fits S&W Shield 9/40 (Incl. M2.0) | Right | Black
  • INSIDE THE WAISTBAND KYDEX HOLSTER fits: Smith & Wesson SHIELD 9/40 (Incl. M2.0) (ONLY unless Specified). Our minimalist IWB holsters are designed to be worn comfortably inside the waistband with an untucked shirt for proper concealed carry. We use .08” KYDEX precision formed over our proprietary in house CAD designed and crafted Aluminum molds. This ensures unparalleled consistency, fit, quality, durability, lightness, comfort, & uniform features across all of our holsters.
  • EXCLUSIVE HOLSTER FEATURES: Undercut Trigger Guard keeps the KYDEX from interfering with your draw. Over-Cut Open-Face accommodates Threaded Barrels and clears Suppressor Height Sights. Full length Sweat Guard & Rear Sight Shield to protect your weapon from sweat. Fiber Reinforced Stealth Belt Clip, so no one knows you are carrying. We utilize all Black Oxide Steel (Phillips) hardware with Threadlock, so you can easily make adjustments but never lose a screw.

SPECIFICATIONS:

  • Material:  Kydex
  • Color: Black
  • Hand Orientation: Right and Left
 

The Concealment Express IWB Kydex Holster is the ultimate concealed carry holster. We utilize our exclusive undercut trigger guard design to allow you to get a full grip on your weapon while keeping the Kydex from interfering with your draw. Our over-cut open-face design accommodates threaded barrels and clears suppressor height sights, while our full-length sweat guard & rear sight shield protect your weapon from sweat. The fiber-reinforced stealth belt clip keeps this holster firmly in place without anyone knowing you are carrying it.

The Concealment Express IWB Kydex Holster is a high-quality, all-Kydex inside the waistband holster. This minimalist design provides maximum comfort and concealability while still being able to carry a full-sized weapon. The Adjustable ‘Posi-Click’ Retention System allows you to adjust the retention pressure of your weapon so that it will stay securely holstered until you need it.

Pros
Cons

2. Concealment Express IWB Carbon Fiber Black Holster

Concealment Express IWB KYDEX Holster fits Glock 17/19/19X/22/23/26/27/31/32/33/45 (G1-5) | Right | Carbon Fiber Black
13,083 Reviews
Concealment Express IWB KYDEX Holster fits Glock 17/19/19X/22/23/26/27/31/32/33/45 (G1-5) | Right | Carbon Fiber Black
  • INSIDE THE WAISTBAND KYDEX HOLSTER fits: Glock 17/19/19X/22/23/26/27/31/32/33/45 (Gen 1-5) (ONLY unless Specified). Our minimalist IWB holsters are designed to be worn comfortably inside the waistband with an untucked shirt for proper concealed carry. We use .08” KYDEX precision formed over our proprietary in house CAD designed and crafted Aluminum molds. This ensures unparalleled consistency, fit, quality, durability, lightness, comfort, & uniform features across all of our holsters.
  • EXCLUSIVE HOLSTER FEATURES: Undercut Trigger Guard keeps the KYDEX from interfering with your draw. Over-Cut Open-Face accommodates Threaded Barrels and clears Suppressor Height Sights. Full length Sweat Guard & Rear Sight Shield to protect your weapon from sweat. Fiber Reinforced Stealth Belt Clip, so no one knows you are carrying. We utilize all Black Oxide Steel (Phillips) hardware with Threadlock, so you can easily make adjustments but never lose a screw.

SPECIFICATIONS:

  • Material: .08″ Kydex
  • Color: Black
  • Hand Orientation: Right and Left
 

Concealment Express IWB Carbon Fiber Black Holster is custom-made for Glock 21. This Holster is made of .08 Kydex and is the ultimate in lightweight comfort. It’s designed to be worn inside the waistband (IWB) with an optimal 13 degrees forward cant. This holster’s under-cut trigger guard helps you get a full firing grip on your weapon when you draw, while our over-cut open face allows for threaded barrels and clears suppressor height sights. A full-length sweat guard protects the weapon from sweat and other damaging elements.

This minimalist design allows for deep concealment and comfortable all-day carry. The Kydex material is extremely durable and will never bend or break like other holsters on the market today. The Concealment Express IWB Kydex Holster comes with a lifetime warranty against any defects in materials or craftsmanship.

Pros
Cons

3. BLACKHAWK Serpa Sportster Holster

Sale
BLACKHAWK 413513BK-R Serpa Sportster Belt Holster For Glock 20 Right Hand Grey
6,811 Reviews
BLACKHAWK 413513BK-R Serpa Sportster Belt Holster For Glock 20 Right Hand Grey
  • SERPA Auto Lock release
  • Passive retention detent adjustment screw

SPECIFICATIONS:

  • Material: Other
  • Color: Black
  • Hand Orientation: Right and Left
 

The BLACKHAWK Serpa Sportster Holster is an injection-molded, high-performance holster that provides a secure fit with easy access. The Sportster is constructed of injection-molded polymer and fits belts up to 1.75″ wide. The Sportster’s passive retention detent adjustment screw and SERPA Auto Lock release work together so the weapon can only be drawn when the operator wants it to be released. BlackHawk’s Serpa Sportster is a lightweight, high-performance polymer holster that secures your firearm firmly and keeps it there until you need it.

The BLACKHAWK Serpa Sportster Holster is a Level II Retention holster featuring passive retention with an immediate audible click upon re-holster and includes a paddle platform. The Serpa Sportster Holster is molded from high-density polymer for long-lasting durability and comes standard with both belt loop and paddle platforms.

Pros
Cons

4. Safariland Concealment Holster

Sale
Safariland 6378 ALS, Paddle & Belt Slide Holster, Black - STX Plain, Glock 20, 21 (6378-383-411)
4,424 Reviews
Safariland 6378 ALS, Paddle & Belt Slide Holster, Black – STX Plain, Glock 20, 21 (6378-383-411)
  • 6378-383-411 Fits: Glock 20, 21
  • ALS (automatic Locking system) Secures your weapon once holstered and allows a fast draw

SPECIFICATIONS:

  • Material: 100% Cotton Rib Knit
  • Color: Black
  • Hand Orientation: Right
 

The SafariLaminate holster is constructed of SafariSuede, a suede-like material laminated between two layers of Cordura nylon. This holster rides close to the body for easy concealment. The SafariLaminate has an Automatic Locking System (ALS®) that secures firearms once holstered; it locks into place until you release it. The ALS® allows you to reholster your firearm without removing your hand from the grip of the gun. A simple straight up draw is possible because there are no obstructions in front of the holster

The Safariland 6378 ALS is a concealable paddle holster that features a slim and low-profile design for improved concealment. This holster comes with Level 3 retention, which means it can be used as an active retention holster or as a passive retention holster. The ALS is made from SafariLaminate™, which provides the durability needed to withstand daily use while still being very lightweight. The paddle platform allows for easy on and off capabilities, so you don’t have to worry about your weapon falling out when you bend over or move around.

Pros
Cons

5. IWB Gun Holster by Houston

IWB Gun Holster by Houston - ECO Leather Concealed Carry Soft Material | FITS Most Full Sizes, Like XDM, Glock 17/19/21, 92 FS (with Laser) (Right) (CHP-57BL-RH)
368 Reviews
IWB Gun Holster by Houston – ECO Leather Concealed Carry Soft Material | FITS Most Full Sizes, Like XDM, Glock 17/19/21, 92 FS (with Laser) (Right) (CHP-57BL-RH)
  • Strong Metal Clip for Maximum Retention *** This is a RIGHT HAND SIDE PRODUCT ****
  • Safe, Easy and Comfortable to Use as Concealment | Double Stitched for Strength and Durability

SPECIFICATIONS:

  • Material: Leather
  • Color: Black
  • Hand Orientation: Right
 

The IWB Gun Holster by Houston is a revolutionary new way to carry your gun. This gun holster is designed for concealed carry and features an open-top that allows you to quickly draw your weapon when needed. The holster is made of high-quality material that will last for years. It features a strong metal clip that provides maximum retention so your gun stays in place even with vigorous movement. The double stitching on the holster ensures strength and durability so it can withstand daily use, making it perfect for everyday carrying.

The IWB Gun Holster by Houston is a minimalist inside the waistband (IWB) holster that features a strong metal clip for maximum hold and retention. It’s safe, easy, and comfortable to use as concealment while you are out and about. The IWB Gun Holster by Houston is carefully designed for resilience, comfort, and protection. You can wear it anywhere on your belt line without having to worry about sweat or water damage.

Pros
Cons

6. CYTAC OWB Holster

CYTAC OWB Holster for Glock 21 Gen 1 2 3 4 / Glock 21 SF - Index Finger Released | Adjustable Cant | Autolock | Outside Waistband Carry | Lightweight -Right Handed
327 Reviews
CYTAC OWB Holster for Glock 21 Gen 1 2 3 4 / Glock 21 SF – Index Finger Released | Adjustable Cant | Autolock | Outside Waistband Carry | Lightweight -Right Handed
  • Compatible & Incompatible: Compatible with glock 21 gen 1 2 3 4, glock 21 sf; Incompatible with polymer80 glock 21 with picatinny rail. The bottom of the holster is open to support the longer barrel sticking out.
  • High Safety: Level II Retention. It will automatically lock on the trigger when you put the weapon in, and makes a “click” sound to let you know that it is securely locked. Pull the weapon out quickly by pressing the button with your index finger.

SPECIFICATIONS:

  • Material: Military Grade Polymer Materials
  • Color: Black
  • Hand Orientation: Right
 

CYTAC OWB holster is designed for outside the waistband carry. It features a quick-release button that allows you to easily draw your weapon. The CYTAC OWB holster has a skidproof stripe that prevents it from sliding on the belt, making it easier to draw your gun. The CYTAC OWB holster is made of military polymer material, easy to clean and maintain, so light to carry. Simple structure in the internal design makes it more durable and stable. Its good elasticity makes it fit different guns perfectly.

The CYTAC OWB Holster is the best holster for your Glock 21. It has a Level II Retention, which means that it will automatically lock on the trigger when you put the weapon in and makes a “click” sound to let you know that it is securely locked. Pull the weapon out quickly by pressing the button with your index finger.

Pros
Cons

What To Consider When Buying Best Holster for Glock 21?

A holster is a device made of either leather or plastic that covers and contains the trigger guard of a handgun and attaches itself to the belt. This keeps the gun secure without making it difficult for one to access, and also makes carrying the gun around a much more comfortable experience.

Compatible with the Gun

Finding a holster that is compatible with a specific gun can be a challenge, especially if it is a model that does not have very many holsters made for it. The shape and size of the handgun will typically determine what type of holster can be used. Holsters made for pistols usually fit other pistols in the same general style, but even these will not fit all guns. When the gun covers the end of the barrel with its own trigger guard, it will typically cover most but not all of the holster’s trigger guard. At this point, one must decide how comfortable they are carrying around a firearm whose trigger is partially exposed to potential snagging on surrounding objects.

Comfortable to Wear

Carrying a pistol on one’s belt is not terribly comfortable for many people. Even the smallest handguns can dig into the skin and poke around under clothing, especially if they do not fit well in their chosen holster or are carried with nothing but an empty chamber to keep them safe. The larger the handgun, the worse this problem becomes. Holster makers cannot get around physics, so the larger the gun one chooses to carry, the more uncomfortable it will be to do so.

Safe and Secure

It is of vital importance that a handgun is safe when it is in its holster. This means that all safeties are on, there are no external modifications (such as trigger shoes) that make it easier to fire, and no modifications (such as removing the safety altogether) that make it less safe. Even if a gun has multiple safeties built into its design, there is always room for user error, and holster makers cannot account for this in their designs. When carrying a firearm in a holster, one must be certain that it is completely safe and will not go off unexpectedly.

Easy to Draw the Gun

Drawing a handgun from its holster should be quick and easy, as there may come a time when one must draw their gun in an emergency. A holster with retention devices such as thumb break straps or tension screws can take precious extra seconds to remove, and may even require two hands to accomplish this task. For concealed carry, such devices are unnecessary and complicate the process of drawing a handgun in an emergency situation. When choosing a holster for this purpose, it is best to look for ones that can be drawn with one hand without too much trouble or effort.

Level of Retention

The hold which the holster has on the firearm is known as “retention.” There are different types of retention:

Passive – The hold that the holster naturally has on the handgun, such as friction caused by material and shape.

Active – A strap or button mechanism that must be released before a gun can be drawn.

Automatic – A mechanism that locks up when the gun is drawn, sometimes requiring a button to be pushed or twisted for it to be released.

Passive holds are typically not sturdy enough for daily carry, as they can be overcome with moderate effort or aggressive movements. Active retention devices typically require more time and effort to release than is desirable or safe, and automatic locks can be a pain for those who frequently need to remove their gun from its holster.

In general, the more retention a holster has on a gun, the safer it will be. However, one must also consider how quickly they will be able to draw their firearm if necessary. The balance between safety and speed of draw is a personal choice that can only be decided in practice and through testing.

Materials

 The material out of which a holster is made influences its price, comfort, level of retention, durability, and ease of use (inserting the gun into the holster). Generally speaking, holsters made from leather are more comfortable to wear than those made from other synthetic materials. However, for daily carry, leather holsters must remain in constant contact with the skin in order to protect it from damage, which may be uncomfortable for some. Also, sweaty skin is less able to grip onto leather than it is onto other materials, making draw difficult at best and impossible at worst.

Allows Accessories or Optics

Some holsters allow for accessories such as lights and laser sights to be mounted onto the handgun. These accessories greatly increase the capabilities of the gun itself, but cannot be easily used unless it is in a holster that can accommodate them. When choosing a holster that will allow for these attachments, one must ensure that there are holes or other means by which the gun can be changed from its original state. It is also important to choose a holster that allows for the proper placement of these accessories, as many designs can interfere with them and result in their misalignment.

Price

Holsters vary widely in price, ranging from around $20 for simple nylon holsters to over $200 for high-quality leather ones. Although a more expensive holster generally offers a higher level of retention and durability, this is not always the case. In general, if one has the money to purchase a high-quality leather holster from a reputable manufacturer such as Bianchi or Galco for between $80 and $170, they should do so.

FAQs

  • The Ultimate Pocket Holster (The ultimate pocket holster is lightweight and comfortable)
  • Belly Band Holster (Belly band holster is one of the most versatile and comfortable holsters available in the market)
  • IWB Holster
  • Ankle Holster
  • Fanny Pack Holster

Double major in Engineering and Geology at the University of Minnesota. Experienced shooter & hunter for over 15 years. Certified NRA officer for over 10 years working as a writer at Ballachy.com .

There’s a reason why Glock dubs the Glock 21 their workhorse. It’s as reliable as it is tough, and it comes to as little surprise that many law enforcement personnel rely so heavily on this firearm. Best of all, this 45 safe action pistol can be concealed.

Double major in Engineering and Geology at the University of Minnesota. Experienced shooter & hunter for over 15 years. Certified NRA officer for over 10 years working as a writer at Ballachy.com .

The Glock 21 is an extremely reliable handgun and an absolute requirement for most gun enthusiasts. The success of the Glock 21 has meant that other manufacturers, including Smith & Wesson, Sig Sauer, Heckler & Koch, and Springfield Armory have all been introduced.

Double major in Engineering and Geology at the University of Minnesota. Experienced shooter & hunter for over 15 years. Certified NRA officer for over 10 years working as a writer at Ballachy.com .

Conclusion

This list of the best holsters for Glock 21 is a great place to start if you don’t know where to get started. It includes an array of different styles and materials that will meet your needs, no matter what they may be. Whether you want something durable or something with more flexibility, these products should have it all covered! Make sure not to miss the reviews on each product as those provide customers with detailed knowledge about how well each holster functions in real-life situations. If this post has been helpful so far, make sure to check out our other blog posts on guns and outdoors gear too! There are always new articles coming up every week and we would love for you guys to keep coming back.

Double major in Engineering and Geology at the University of Minnesota. Experienced shooter & hunter for over 15 years. Certified NRA officer for over 10 years working as a writer at Ballachy.com .

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