Top 10 Best Holster for Glock 21: Ultimate Carry Gear

The best holster for Glock 21 plays a critical role in ensuring firearm safety, comfort, and accessibility. Selecting a holster involves understanding advanced materials like Kydex or leather, ergonomic design for concealed carry, and retention mechanisms to prevent accidental drops. Innovations in holster technology now address diverse needs, including adjustability for draw speed and compatibility with various Glock 21 models.

Exploring features such as sweat protection, modular attachments, and belt integration unveils the full impact holsters have on firearm handling and security. Whether for tactical use or daily concealed carry, the right Glock 21 holster enhances performance and reliability.

Delve into this guide to uncover essential insights and elevate your carry strategy.

Best Holster for Glock 21: + Top Picks for 2026

Image	Product	Buy
Top Picks- 1	POLE.CRAFT IWB Kydex Holster Custom Fits: Glock 21 / Glock Best for: Custom Fit Enthusiasts	Check Price On Amazon
Top Picks- 2	OWB Holster Compatible with Glock 21 Gen 1 2 3 Best for: Classic OWB Users	Check Price On Amazon
Top Picks- 3	G21 Gun Holster for Glock 21 Gen 1 2 3 Best for: General Glock Owners	Check Price On Amazon
Top Picks- 4	WARRIORLAND OWB Kydex Holster, Select Fits Glock 19/43X, P365, Hellcat Best for: Multi-Model Compatibility	Check Price On Amazon
Top Picks- 5	for Glock 20 OWB Holster – USA Made – Fits Best for: USA-Made OWB Fans	Check Price On Amazon

1. POLE.CRAFT IWB Kydex Holster Custom Fits: Glock 21 / Glock

Best for: Custom fit Kydex IWB carry.

Crafted from 0.08-inch US Kydex, the POLE.CRAFT IWB Holster offers a lightweight yet durable option that fits Glock 21, 20 (Gen 3-5), and Glock 22 Gen 5 models precisely. Its sweat-proof, waterproof, and washable design makes it a reliable choice for daily carry in varying conditions.

Measuring to fit the specific frame sizes of various Glock generations, this holster maintains a slim profile for discreet inside-the-waistband (IWB) carry. The rugged Kydex handcraft ensures longevity with resistance to sweat and moisture, while its portability allows seamless transitions between different carry environments.

Pros

• Precise custom fit for Glock 21/20/22 (various generations)
• 0.08-inch Kydex material for lightweight yet durable construction
• Sweat-proof and waterproof properties for all-day comfort
• washable design for easy maintenance

Cons

• Limited to IWB carry style, not compatible with OWB setups

Ideal for Glock 21 owners seeking a robust and discreet IWB holster for everyday use. This holster suits those who prioritize comfort and durability without sacrificing concealment.

2. OWB Holster Compatible with Glock 21 Gen 1 2 3

Best for: OWB Level II retention security.

The CYTAC OWB holster secures Glock 21 Gen 1-4 and SF models with Level II Retention, offering automatic trigger lock upon holstering and audible confirmation. Its open-bottom design supports extended barrels, making it a strong choice for quick access and securely locking your firearm.

With compatibility spanning multiple Glock 21 generations and featuring an included Allen key for adjustments, this OWB holster emphasizes safety and convenience. The push-button release allows a smooth, rapid draw, while its durable polymer build withstands daily use in demanding scenarios.

Pros

• Level II automatic retention locks trigger for enhanced safety
• Compatible with Glock 21 Gen 1-4 and SF models
• Open bottom design supports longer barrels
• Push-button quick-release for efficient drawing

Cons

• Incompatible with Polymer80 Glock 21 models equipped with Picatinny rails

Highly suited for Glock 21 users needing sturdy outside-the-waistband security and rapid accessibility. This holster benefits those who prioritize locking safety with quick draw capabilities.

3. G21 Gun Holster for Glock 21 Gen 1 2 3

Best for: OWB paddle with quick-release button.

Designed for Glock 21/20 Gen 1-4 and Standard Frame models, the Bedone OWB paddle holster incorporates a 360-degree adjustable mount and a quick-release button strategically positioned for trigger finger operation. This design enables fast, adaptable carry setups and smooth draws.

Weighing 0.18 kg, the holster balances durability with comfort for prolonged wear. Its integrated auto-locking mechanism adds security, while the adjustable paddle mount allows users to customize their carry angle, making it practical for various duty or seasonal clothing configurations.

Pros

• 360-degree adjustable paddle mount for personalized carry angle
• Quick-release button placed for intuitive index finger use
• Integrated auto-locking for firearm retention
• Fits multiple Glock models including Gen 1-4 and SF

Cons

• Limited to right-handed users, no left-hand variant listed

Perfect for Glock 21 carriers seeking versatile outside-the-waistband options with quick access. The paddle platform is ideal for those preferring adjustable angles and swift draw under varied conditions.

4. WARRIORLAND OWB Kydex Holster, Select Fits Glock 19/43X, P365, Hellcat

Best for: Durable optics-cut OWB Kydex carry.

Using 0.08-inch U.S. Kydex, the WARRIORLAND OWB holster fits Glock 21, 20 (Gen 3-5), and Glock 22 Gen 5 models and features an optics cut allowing a variety of red dot sights to be accommodated. The hand-polished edges enhance all-day wearing comfort while preserving ruggedness.

Its dimensions include a 1.75-inch durable belt paddle for secure attachment and ease of removal. Waterproof, washable, and lightweight, this OWB holster is ready for extended daily use, offering compatibility with many Glock optic setups without compromising concealment or retention.

Pros

• Optics cut supports a wide range of red dot sights
• 0.08-inch Kydex material ensures rugged waterproof durability
• Hand-polished edges for comfortable wear
• 1.75-inch belt paddle for stable OWB carry

Cons

• Incompatible with holsters fitted with lasers or lights

A smart choice for Glock 21 owners wanting an OWB holster supporting optic-equipped pistols. Recommended for users who value comfort during extended wear and need compatibility with popular sight systems.

5. for Glock 20 OWB Holster – USA Made – Fits

Best for: USA-made polymer OWB precision fit.

Employing high-strength, heat-resistant polymer made in the USA, Blade-Tech’s OWB holster delivers a precise fit for Glock 20 and 21 (Gen 3-5) pistols. Its rigid construction supports secure, comfortable everyday belt carry with a mounting pattern adaptable to various attachments.

The holster accommodates multiple accessory configurations thanks to its versatile mounting pattern, enhancing user customization. Designed specifically for outside-the-waistband carry, it provides a secure platform that pairs top-notch polymer resilience with a lifetime warranty for reliability.

Pros

• Heat-resistant USA-made polymer for durable construction
• Precision molded for Glock 20/21 Gen 3-5 models
• Versatile attachment pattern expands mounting options
• Lifetime warranty ensuring product confidence

Cons

• Designed strictly for OWB carry, unsuitable for IWB concealment

Ideal for Glock 21 users who prefer rugged, American-made polymer OWB holsters with customization potential. Suited for those needing a durable holster for regular outside-the-waistband use.

6. G20 21 22 Holster IWB Kydex Holster w/Optics Cut: G21

Best for: IWB Kydex with optics cut.

The WARRIORLAND G20/21/22 IWB Kydex holster features a 0.08-inch thick U.S.-made Kydex that is waterproof, rugged, and washable. Designed with an optics cut, it accommodates numerous red dot sights for tactical flexibility while supporting concealment through its slim inside-the-waistband profile.

Hand-polished edges provide abrasion-free comfort during extended wear. Compatible with Glock 20, 21, and 22 Gen 3-5 models, this holster balances protection and concealment while allowing users to carry pistols fitted with optics without bulk or hindrance.

Pros

• Optics cut for red dot sight compatibility
• Durable, waterproof 0.08-inch U.S. Kydex material
• Hand-polished edges for enhanced comfort
• Slim profile for concealed inside-the-waistband carry

Cons

• Compatibility excludes any weapon-mounted lasers or lights

Suited for Glock 21 owners requiring an IWB holster that supports optics. The slim design and rugged material make it efficient for all-day concealment with tactical readiness.

7. IWB Leather Holster for Inside the Waistband Concealed Carry Fits:

Best for: Premium cowhide IWB leather concealment.

Constructed with premium cowhide leather of at least 0.1-inch thickness, this inside-the-waistband holster fits Glock 17, 19, 20, 21, 22, and more. Its reinforced holster opening and double-stitched seams assure durability while concealing your firearm discreetly under everyday attire.

Handmade solid craftsmanship ensures the holster maintains its shape, allowing quick weapon drawing for self-defense. Its adaptability to a broad range of Glock models increases versatility, while leather’s natural breathability aids in comfort for all-day concealed carry.

Pros

• High-quality cowhide with minimum 0.1-inch thickness for longevity
• Double-stitched seams reinforce structure
• Reinforced holster opening for smooth reholstering
• Fits multiple Glock models (17,19,20,21,22,31,32,37,45,48,49)

Cons

• Leather material may absorb moisture and requires extra maintenance

A fitting pick for Glock 21 carriers preferring traditional leather IWB holsters with robust build quality. Ideal for concealed carry practitioners valuing natural materials and quick draw response.

8. Blackhawk, Serpa Close Quarters Conceal, Gun Holster

Best for: Secure Serpa CQC belt & paddle holster.

The BLACKHAWK Serpa Close Quarters Conceal holster includes both belt and paddle mounting options, servicing hunting and tactical applications. Weighing under 9 ounces, it offers a solid balance of security and portability for Glock 21 users seeking versatile carry methods.

With a 2-year manufacturer warranty, this holster combines Serpa’s signature locking retention with multi-mount flexibility. The holster fits securely when attached to belts or as a paddle, providing efficient draw mechanics and trusted retention for rigorous scenarios.

Pros

• Includes both belt and paddle mounting options
• Lightweight at approximately 8.96 ounces
• Serpa retention system locks securely upon holstering
• 2-year manufacturer warranty for peace of mind

Cons

• Heavier compared to some minimalist polymer or Kydex holsters

Perfect for Glock 21 owners needing a dependable holster that adapts between belt and paddle carry. Suited for those who want trusted retention systems with flexibility for outdoor or tactical use.

9. WARRIORLAND Kydex Holster w/Claw, Select Fits Sig P365/P320, G43X/G19…

Best for: IWB Kydex with concealment claw.

The WARRIORLAND Kydex holster with claw attachment is crafted from .08-inch thick U.S. Kydex material designed specifically for Glock 20/21 (Gen 3-5) and Glock 22 Gen 5 models. The claw enhances concealment by pivoting the pistol’s butt closer to the body, minimizing printing.

With compatibility limited to MOS and standard Glock models sans laser/light attachments, this holster balances comfort and concealment. The claw feature aids in maximizing concealability without sacrificing secure weapon retention for inside-the-waistband carry.

Pros

• Claw attachment improves concealment by reducing pistol printing
• .08-inch thick U.S.-made Kydex ensures durable protection
• Optics-ready design accommodates various red dot configurations
• Hand-polished edges for comfortable all-day carry

Cons

• Incompatible with firearms equipped with laser/light attachments

Ideal for Glock 21 users focused on deep concealment with optic compatibility. The attachment claw suits those needing maximum discretion in everyday concealed carry.

10. for Glock 20/21 OWB Holster – USA Made – Fits

Best for: Streamlined polymer OWB with secure loops.

Blade-Tech’s Total Eclipse OWB holster features heat-resistant polymer produced in the USA, designed to fit Glock 20/21 (Gen 3 & 4) pistols reliably. Its streamlined OWB loops secure the firearm snugly to the body, enhancing everyday concealed carry comfort and retention.

This holster’s design focuses on reducing bulk while maintaining retention and easy access. Its polymer shell molds precisely for the Glock frame, and the loops minimize firearm movement, ensuring a consistent carry position throughout daily activities.

Pros

• USA-made high-strength, heat-resistant polymer
• Streamlined OWB loops enhance firearm stability
• Precision molding fits Glock 20/21 Gen 3 & 4 pistols
• Designed for everyday OWB concealed carry

Cons

• Limited compatibility excludes Gen 5 Glock models

Recommended for Glock 21 users who favor OWB concealed carry with a low-profile setup. A practical choice for those who want consistent weapon retention with minimal bulk.

How to Choose the Right Holster for Glock 21

Material quality and durability

When selecting the best holster for a Glock 21, prioritize materials that endure frequent use and resist environmental stress. Leather offers natural comfort and molds well over time, but higher-grade, tightly tanned leather lasts longer without losing shape. Kydex stands out for durability and weather resistance, maintaining its form across conditions without absorbing moisture.

Hybrid holsters combine rigid backing with soft leather or padded materials, balancing sturdiness with comfort. Avoid materials prone to premature wear or excessive rigidity that cause discomfort during long periods.

Choose a high-quality Kydex or hybrid holster with reinforced stitching and corrosion-resistant hardware for enduring everyday use and optimal comfort.

Retention and safety features

Retention is critical for safe Glock 21 carry. Holsters using locking mechanisms or active retention systems add security, while friction or passive retention relies on precise molding to the firearm. A well-designed holster fully covers the trigger guard, preventing accidental discharge during draw or holstering.

Adjustable retention strength allows you to set the tension to your preference, balancing quick access with secure hold. Reject holsters with loose retention or inadequate trigger coverage.

The ideal choice features adjustable locking retention combined with full trigger guard protection, ensuring safety without compromising rapid deployment.

Design and ergonomics

Consider the holster’s intended use when evaluating design and ergonomics. Concealed carry demands slim, low-profile holsters that hug the body and minimize printing, while duty carry can tolerate larger, bulkier designs optimized for accessibility. Low bulk is crucial for comfort and concealment, especially with the Glock 21’s size, so holsters with minimal protrusion and rounded edges enhance wearability for extended periods.

In this category, opt for ergonomic holsters with slim profiles and padded backing for concealed carry, or robust full-coverage models suitable for uniformed duty where concealment is unnecessary.

Fit and compatibility

The perfect fit for the Glock 21 is non-negotiable. Since this model is larger with specific dimensions, select holsters precisely cut for its frame to avoid loose or forced fit. Confirm compatibility with attachments like tactical lights or lasers if such accessories are employed, as holsters vary in allowance.

Holsters that offer adjustable cant angles and mounting positions adapt better to different body shapes and carrying preferences. Prioritize holsters custom-molded for the Glock 21 with accessory accommodation and flexible attachment points to ensure retention and comfort aligned with your setup.

Carry position and accessibility

Choosing your carry position depends on accessibility and comfort priorities. Inside-the-waistband holsters provide superior concealment but require attention to comfort and breathability during extended wear. Outside-the-waistband designs offer faster draw speed and ease in reholstering at the cost of increased print and bulk.

Select holsters offering quick-detach or adjustable clips to reposition carry location and optimize comfort throughout the day. For everyday concealment, a slim IWB holster with adjustable cant is best; for law enforcement or range use prioritizing quick access, an OWB holster with secure retention suits perfectly.

Which Should You Choose?

• If you prioritize concealed carry and comfort, choose an inside-the-waistband (IWB) Kydex holster designed specifically for Glock 21 models.
• If you prefer quick access and open carry, select an outside-the-waistband (OWB) paddle holster compatible with early Glock 21 generations without rail attachments.
• If you need a durable holster that withstands intense use, opt for a precision-molded polymer holster made in the USA for reliable fit and longevity.
• If your Glock 21 has attachments like optics or lights, look for holsters with optics cut or ensure compatibility with accessories to maintain functionality.

Quick Best Holster For Glock 21 Buying Checklist

• Material: Choose durable materials like Kydex or quality leather for longevity and comfort.
• Retention: Ensure the holster securely holds the Glock 21 with adjustable retention options.
• Fit: Verify the holster is designed specifically for Glock 21 dimensions and any attachments.
• Carry Style: Decide between IWB or OWB based on your concealment and accessibility needs.
• Comfort: Look for ergonomic designs that minimize bulk and maximize wearability.
• Safety: Confirm the holster fully covers the trigger guard to prevent accidental discharge.

Frequently Asked Questions

What Types Of Materials Make The Best Holster For Glock 21?

The best holster materials for Glock 21 include Kydex and quality leather because they offer durability and comfort. Kydex holsters provide rigid retention and easy maintenance, while leather molds to your body for a comfortable fit over time.

How Important Is Retention In A Holster For Glock 21?

Retention is crucial in a holster for Glock 21 to ensure the firearm stays securely in place during movement. Adjustable retention systems and secure locking mechanisms provide safety and prevent accidental dislodging of the weapon.

Can Glock 21 Holsters Accommodate Accessories Like Lights Or Lasers?

Yes, many Glock 21 holsters are designed with compatibility for common tactical accessories such as lights and lasers. Selecting a holster that specifically mentions accessory accommodation ensures proper fit and function without compromising draw speed.

What Are The Differences Between Iwb And Owb Holsters For Glock 21?

Inside the waistband (IWB) holsters offer better concealment of the Glock 21 and are closer to the body for comfort, while outside the waistband (OWB) holsters provide quicker access and are more comfortable for extended wear. Your choice depends on your carry needs.

How Does Holster Design Impact Comfort When Carrying A Glock 21?

Holster design greatly affects comfort by influencing bulk, weight distribution, and how the holster interfaces with your body. Ergonomic designs with adjustable cant and smooth edges help reduce discomfort during long periods of carry.

Final Suggestions

Selecting the best holster for Glock 21 enhances safety, comfort, and accessibility whether for concealed or open carry. High-quality construction and thoughtful design ensure durability and user confidence in any scenario. By choosing the right holster tailored to your Glock 21, you equip yourself for secure and efficient carry every day.