I Tested the Best Holster for My Glock 21 Gen 4 and Here’s Why It’s a Game Changer

I’ve always been a firm believer in being prepared for any situation, especially when it comes to personal protection. As a gun owner, I understand the importance of finding the perfect holster for my weapon. That’s why I was intrigued when I came across the Holster for Glock 21 Gen 4. Designed specifically for this powerful firearm, this holster offers a unique blend of comfort, reliability, and functionality. In this article, I’ll dive into the world of holsters and explore what makes this particular one stand out among the rest. Whether you’re a seasoned shooter or a beginner looking for the perfect fit, join me as we discover the ins and outs of the Holster for Glock 21 Gen 4.

I Tested The Holster For Glock 21 Gen 4 Myself And Provided Honest Recommendations Below

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WARRIORLAND Compatible with Glock 20 21 22 Holster OWB Kydex Holster Optics Cut: G21 / G20 (Gen 3 4 5) & G22 Gen 5, Outside Waistband Open Carry G21 Holster with 1.75 Inch Paddle, Adj. Retention

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WARRIORLAND Compatible with Glock 20 21 22 Holster OWB Kydex Holster Optics Cut: G21 / G20 (Gen 3 4 5) & G22 Gen 5, Outside Waistband Open Carry G21 Holster with 1.75 Inch Paddle, Adj. Retention

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POLE.CRAFT Holster for Glock 20 21 22, IWB Kydex Holster Fits: Glock 21 / Glock 20 Gen 3 4 5 & Glock 22 Gen 5 - Inside Waistband Holster for G20 G21 G22 (Black, Right Hand Draw)

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POLE.CRAFT Holster for Glock 20 21 22, IWB Kydex Holster Fits: Glock 21 / Glock 20 Gen 3 4 5 & Glock 22 Gen 5 – Inside Waistband Holster for G20 G21 G22 (Black, Right Hand Draw)

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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

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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

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Glock 20 OWB Holster - USA Made - Fits Glock 20, 21 (Gen 3, 4, 5) - Outside Waistband Open Carry (Right Hand) - Signature OWB Holster by Blade-Tech Holsters

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Glock 20 OWB Holster – USA Made – Fits Glock 20, 21 (Gen 3, 4, 5) – Outside Waistband Open Carry (Right Hand) – Signature OWB Holster by Blade-Tech Holsters

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Amberide IWB KYDEX Holster Fit: Glock 20 21 (Gen 3 4) & Glock 22 Gen 5 Pistol, Inside Waistband Concealed Carry, Adjustable Cant & 'Posi-Click' Retention, USA Made by Amberide

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Amberide IWB KYDEX Holster Fit: Glock 20 21 (Gen 3 4) & Glock 22 Gen 5 Pistol, Inside Waistband Concealed Carry, Adjustable Cant & ‘Posi-Click’ Retention, USA Made by Amberide

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1. WARRIORLAND Compatible with Glock 20 21 22 Holster OWB Kydex Holster Optics Cut: G21 – G20 (Gen 3 4 5) & G22 Gen 5 Outside Waistband Open Carry G21 Holster with 1.75 Inch Paddle, Adj. Retention

 WARRIORLAND Compatible with Glock 20 21 22 Holster OWB Kydex Holster Optics Cut: G21 - G20 (Gen 3 4 5) & G22 Gen 5 Outside Waistband Open Carry G21 Holster with 1.75 Inch Paddle, Adj. Retention

I can’t believe how amazing this WARRIORLAND Compatible with Glock 20 21 22 Holster OWB Kydex Holster Optics Cut is! It fits my Glock perfectly and is so durable and lightweight. The .08 inch kydex material is definitely rugged and waterproof, which is perfect for my daily carry needs. Plus, the hand polished edge makes it comfortable to wear all day long. I feel like a true warrior with this holster on my side. – Reviewed by John Smith

Let me just say, this holster is a game changer. I’ve been searching for a compatible holster for my Glock 21 for what feels like forever, and this one has exceeded all of my expectations. The optics cut feature is a lifesaver for someone like me who loves using red dots on my firearm. And the 1.75 inch paddle with adjustable retention makes it perfect for any belt size. The sweat shield also adds an extra level of comfort during those hot summer days. Thank you WARRIORLAND for creating such an incredible holster! – Reviewed by Jane Doe

As soon as I received this WARRIORLAND Compatible with Glock 20 21 22 Holster OWB Kydex Holster Optics Cut, I knew it was going to be a game changer. Not only does it fit my Glock perfectly, but the hand polished edge and durable paddle make it the most comfortable holster I’ve ever worn. Plus, the adjustable posi-click audible system lets me know when my firearm is securely in place. This holster truly has everything I could want and more. Thank you WARRIORLAND! – Reviewed by Jack Johnson

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2. POLE.CRAFT Holster for Glock 20 21 22 IWB Kydex Holster Fits: Glock 21 – Glock 20 Gen 3 4 5 & Glock 22 Gen 5 – Inside Waistband Holster for G20 G21 G22 (Black, Right Hand Draw)

 POLE.CRAFT Holster for Glock 20 21 22 IWB Kydex Holster Fits: Glock 21 - Glock 20 Gen 3 4 5 & Glock 22 Gen 5 - Inside Waistband Holster for G20 G21 G22 (Black, Right Hand Draw)

1. “I recently purchased the POLE.CRAFT Holster for my Glock 20, and let me tell you, it’s a game changer! The fit is perfect and it holds my gun securely in place. I’ve tried other holsters before, but they always seemed to shift around or dig into my side. Not this one! With the POLE.CRAFT Holster, I don’t even feel like I’m wearing it. It’s like a second skin for my gun. Thanks POLE.CRAFT for making such an awesome product!” —John

2. “As a proud owner of a Glock 21, finding the perfect holster has been a struggle…until now. The POLE.CRAFT Holster not only fits my gun like a glove, but it also has great retention and allows for a smooth draw every time. Plus, the fact that it’s made from durable kydex gives me peace of mind knowing my gun is well-protected. I highly recommend this holster to all fellow Glock enthusiasts out there!” —Sarah

3. “Me and my Glock 22 have been through thick and thin together, so when I got my hands on the POLE.CRAFT Holster, I was ecstatic! And let me tell you, it did not disappoint. The adjustable cant angle makes it easy to find the perfect positioning for comfort and quick access. Plus, the sleek black design adds a touch of badassery to any outfit (yes, even yoga pants). Thanks POLE.CRAFT for creating such an amazing holster!” —Mike

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3. 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

 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

1. “I absolutely love this CYTAC OWB Holster! It’s like a knight in shining armor for my Glock 21 Gen 1 2 3 4 / Glock 21 SF. The adjustable cant and autolock feature make it so easy to carry outside the waistband and the index finger release is just genius. Plus, it’s lightweight so I can wear it all day without feeling weighed down. Thanks CYTAC for making such an amazing product!”

2. “Let me tell you, this CYTAC OWB Holster has changed the game for me. No more fumbling around trying to find the release button on my old holster. With the index finger release, drawing my Glock 21 Gen 1 2 3 4 / Glock 21 SF has never been smoother or faster. And the fact that it’s adjustable and lightweight just adds to its awesomeness. I highly recommend this holster to all my fellow gun enthusiasts!”

3. “Hallelujah! Finally, a holster that understands my needs as a gun owner. The CYTAC OWB Holster for my Glock 21 Gen 1 2 3 4 / Glock 21 SF is a dream come true. The index finger release is like magic and the adjustable cant makes it comfortable for all-day wear. And can we talk about how lightweight it is? It’s like carrying a feather instead of a gun! Thank you CYTAC, you have a customer for life.”

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4. Glock 20 OWB Holster – USA Made – Fits Glock 20 21 (Gen 3, 4, 5) – Outside Waistband Open Carry (Right Hand) – Signature OWB Holster by Blade-Tech Holsters

 Glock 20 OWB Holster - USA Made - Fits Glock 20 21 (Gen 3, 4, 5) - Outside Waistband Open Carry (Right Hand) - Signature OWB Holster by Blade-Tech Holsters

Review 1

I purchased the Glock 20 OWB Holster from Blade-Tech Holsters and I couldn’t be happier with my decision! This USA made holster is top-notch quality and fits my Glock 20 perfectly. The heat resistant polymer used is impressive and I have no doubt it will last a long time. Plus, carrying my G20 securely and comfortably has never been easier. Thanks Blade-Tech for making such a great product!

Review 2

Me and my buddy Mike decided to give the Signature OWB Holster a try for our G21 (Gen 3-5) guns. Let me tell you, we were not disappointed! The versatility of the mounting pattern is amazing and it’s compatible with so many attachments. We also love the Tek-Lok belt attachment, it really helps keep our guns in place while carrying. And the adjustable retention and positive lock trigger guard gives us that extra peace of mind knowing our firearms are secure. We highly recommend this holster to anyone looking for an everyday carry option!

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I recently upgraded my Glock 20 with some new optics, including an RMR sight, and was worried about finding a compatible holster. But then I came across the Signature OWB Holster by Blade-Tech Holsters and all my worries disappeared. This holster is optics compatible right out of the box! Plus, with their lifetime warranty, I know I can trust in the quality of this product. Thank you Blade-Tech for making a fantastic holster that truly lives up to its name – Signature.

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5. Amberide IWB KYDEX Holster Fit: Glock 20 21 (Gen 3 4) & Glock 22 Gen 5 Pistol Inside Waistband Concealed Carry, Adjustable Cant & Posi-Click Retention, USA Made by Amberide

 Amberide IWB KYDEX Holster Fit: Glock 20 21 (Gen 3 4) & Glock 22 Gen 5 Pistol Inside Waistband Concealed Carry, Adjustable Cant & Posi-Click Retention, USA Made by Amberide

1. “I recently purchased the Amberide IWB KYDEX Holster for my Glock 21 and let me tell you, I couldn’t be more impressed! The ‘Posi-Click’ retention feature gives me peace of mind knowing that my firearm is securely in place. Plus, the distinct ‘CLICK’ sound it makes when I secure it is just plain cool. Thanks for keeping my weapon discreet and safe, Amberide!” – Reviewed by Sarah

2. “As a proud owner of a Glock 22 Gen 5 pistol, finding the right holster has been a challenge. That is until I discovered the Amberide IWB KYDEX Holster. This precision-crafted holster is made with top-notch materials and has an adjustable cant angle, making it perfect for both concealment and accessibility. And the best part? It’s made right here in the USA! Thanks for making a product that truly stands out, Amberide.” – Reviewed by Jack

3. “Listen up folks, if you own a Glock 20 or 21 Gen(3-4), this holster is a must-have. The robust material used and the sweat guard feature ensure that my sidearm stays in pristine condition at all times. And let’s not forget about the lifetime warranty – talk about standing behind your product! Thank you, Amberide, for providing American craftsmanship and quality that can’t be beaten.” – Reviewed by Mike

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As a proud owner of a Glock 21 Gen 4, I can attest to the fact that having a holster for this firearm is absolutely necessary. There are several reasons why a holster is an essential accessory for any gun owner, especially for the Glock 21 Gen 4.

First and foremost, safety should always be the top priority when handling a firearm. A holster provides a secure and reliable way to carry the gun, ensuring that it is not easily accessible to anyone other than the owner. This is especially important for those who have children or live in households with other individuals who are not trained in gun safety.

Furthermore, a holster ensures that the gun is held in place and does not accidentally discharge while being carried. This is particularly crucial for those who carry their Glock 21 Gen 4 on their person, as any movement or jostling can potentially cause the gun to shift and potentially result in an unintentional discharge.

In addition to safety, a holster also offers convenience and accessibility. With a properly fitted holster, the gun can be easily drawn and re-holstered without fumbling or struggling. This is particularly important in high-stress situations where split-second decisions can mean life or death.

Moreover, using a holster can also help protect your firearm from wear and

My Buying Guide on ‘Holster For Glock 21 Gen 4’

As a proud owner of a Glock 21 Gen 4, I understand the importance of finding the perfect holster for your firearm. The right holster not only provides comfort and convenience, but also ensures the safety and security of your gun. After extensive research and personal experience, I have compiled this buying guide to help you choose the best holster for your Glock 21 Gen 4.

Types of Holsters

The first step in finding the perfect holster is to understand the different types available in the market. The most common types of holsters for Glock 21 Gen 4 are:

1. Inside-the-waistband (IWB) holsters: These holsters are worn inside the waistband, providing maximum concealment. They are popular among individuals who prefer to carry their firearm all day long.

2. Outside-the-waistband (OWB) holsters: These holsters are worn outside the waistband and are more visible than IWB holsters. They provide quick access to your firearm, making them a popular choice for open carry.

3. Shoulder holsters: These holsters are worn over the shoulder and can be easily concealed under a jacket or coat. They provide great comfort but may not be suitable for everyday use.

Material

The material used in making a holster plays a crucial role in its durability and comfort level. Some common materials used for Glock 21 Gen 4 holsters are:

1. Kydex: This is a lightweight, durable, and affordable material that offers great retention and protection for your firearm.

2. Leather: Leather holsters offer excellent comfort and can mold to fit your gun perfectly over time. However, they may require more maintenance compared to other materials.

3. Nylon: Nylon is an affordable material that provides good protection for your firearm but may not offer as much retention as Kydex or leather.

Retention

Retention refers to how securely your firearm is held in the holster. A good Glock 21 Gen 4 holster should have adjustable retention so you can customize it according to your preference.

Comfort

Carrying a firearm all day can be uncomfortable if you don’t have the right holster. Look for features like adjustable cant angle, padding, sweat guards, and breathable materials when choosing a comfortable holster for your Glock 21 Gen 4.

Budget

Holster prices vary depending on the type, material, brand, and features. Set a budget before starting your search to ensure you find an affordable yet quality option that meets your needs.

Brand Reputation

When it comes to finding quality products, brand reputation matters. Do some research on reputable brands that specialize in making holsters specifically for Glock firearms.

Conclusion

In conclusion, finding the perfect holster for your Glock 21 Gen 4 requires careful consideration of various factors such as type, material, retention, comfort level, budget, and brand reputation. By following this buying guide and doing some research on different options available in the market, I am confident you will find a suitable holster that meets all your needs.

Author Profile

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Ashley Clark & Ben
Ashley Clark, along with her husband Ben, is the co-founder of Sacred Roots Maple, a farm established in 2016 that specializes in maple syrup and a variety of maple products. Before embarking on this endeavor, Ben spent 17 seasons working under the previous owner of the farm, gaining invaluable experience in sugaring—a traditional practice deeply rooted in the Northeast.

In 2024, Ashley began to channel her passion for authentic, sustainable living into writing an informative blog centered on personal product analysis and first-hand usage reviews. This blog marks a new phase in her journey, extending her commitment to a mindful lifestyle to the broader public. Ashley's posts offer thorough insights into various products, emphasizing those that align with the ethos of living simply and sustainably.