Carrying your Glock 21 Gen 4 safely and comfortably is important. But finding the perfect holster can feel like a treasure hunt with too many choices. You want a holster that keeps your firearm secure, makes it easy to draw when you need it, and feels good all day long. The wrong holster can be bulky, uncomfortable, or even unsafe.
This is where we come in. We know how tricky it can be to pick the right holster for your Glock 21 Gen 4. That’s why we’ve put together this guide. We’ll help you understand what makes a great holster and what to look for.
By reading on, you’ll learn about the different types of holsters available, what features matter most, and how to choose one that fits your needs perfectly. We’ll break down the options so you can make a confident decision and carry your Glock 21 Gen 4 with ease and security.
Our Top 5 Holster For Glock 21 Gen 4 Recommendations at a Glance
Top 5 Holster For Glock 21 Gen 4 Detailed Reviews
1. POLE.CRAFT Holster for Glock 20 21 22
Rating: 9.0/10
The POLE.CRAFT Holster for Glock 20, 21, and 22 is designed for comfortable and secure concealed carry. This inside-the-waistband (IWB) holster is made from US .08” KYDEX and is specifically crafted for Glock 21 / Glock 20 (Gen 3, 4, 5) and Glock 22 Gen 5. It promises a precise fit, rugged durability, and allows for easy concealment, so you can feel protected wherever you go.
What We Like:
- It’s made from tough KYDEX, making it strong and able to withstand sweat and water.
- You can adjust the angle (cant) of the holster to make drawing your firearm quicker and easier.
- The retention pressure is adjustable, so you can set how tightly the gun fits.
- It comes with a lifetime warranty, giving you peace of mind.
- The holster is lightweight and designed to be hidden under your clothes.
What Could Be Improved:
- The holster is designed for right-hand draw only; left-handed shooters would need to find a different option.
- While it mentions it can be used outside the belt (OWB), you need to choose a different hand for that option, which might be confusing.
This POLE.CRAFT holster offers a solid and customizable option for Glock owners who prioritize secure and discreet carry. Its adjustable features and durable construction make it a reliable choice for everyday protection.
2. CYTAC OWB Holster for Glock 21 Gen 1 2 3 4 / Glock 21 SF – Index Finger Released
Rating: 8.8/10
The CYTAC OWB Holster is designed for Glock 21 owners who need a secure and accessible way to carry their firearm. It’s built tough from military-grade polymer, making it durable and light for comfortable all-day wear. This holster offers a reliable Level II retention system, meaning your Glock clicks securely into place and won’t come out unless you intentionally release it with your index finger. The open bottom design accommodates the longer barrel of the Glock 21, and the adjustable cant lets you find the perfect angle for drawing.
What We Like:
- It securely locks your Glock 21 in place with a “click” sound, so you know it’s safe.
- You can easily and quickly draw your firearm by pressing a button with your index finger.
- The holster is made of strong military polymer, which is light and easy to clean.
- It fits comfortably on belts up to 2 inches wide, and you can adjust its angle for a better draw.
- The design helps you find the release button by touch, even in the dark.
- It works well for everyday carry, shooting practice, and even for law enforcement.
What Could Be Improved:
- It’s not compatible with the Polymer80 Glock 21 that has a picatinny rail.
Overall, this CYTAC holster provides excellent security and ease of use for your Glock 21. It’s a great option for anyone prioritizing a safe and accessible carry solution.
3. Glock20/21/22 Holster IWB Kydex Holster Fit: Glock 20 21 22 (Gen 3 4 5) Pistol – Inside Waistband Concealed Carry – Adjustable Cant & ‘Posi-Click’ Retention – No Wear/Jitter – US Made by Amberide
Rating: 9.0/10
Conceal your Glock 20, 21, or 22 with confidence using the Amberide IWB Kydex Holster. This American-made holster is designed for Gen 3, 4, and 5 pistols, offering a secure and comfortable fit for inside-the-waistband carry. It’s built tough from .08″ Kydex and uses custom molds for a precise fit, ensuring your firearm stays protected and doesn’t move around.
What We Like:
- It fits Glock 20, 21, and 22 pistols from Gen 3 to Gen 5 perfectly.
- The “Posi-Click” retention system makes a satisfying click when your gun is securely holstered, so you know it’s safe.
- You can easily adjust the belt clip angle (0-30 degrees) for your best comfort.
- The retention pressure can be adjusted with a hex key for a faster draw.
- It’s made from durable, waterproof Kydex that’s easy to clean and protects your gun from sweat.
- It’s proudly made in the USA and comes with a lifetime warranty for peace of mind.
- There are 12 color options and it can be used for both right and left-hand draw.
What Could Be Improved:
- This holster is not compatible with light or laser attachments on your Glock.
This Amberide holster offers a secure, customizable, and durable way to carry your Glock pistol. It’s a solid choice for anyone prioritizing reliable concealed carry.
4. WARRIORLAND OWB Kydex Holster Optics Cut: Fit for G21 / G20 (Gen 3 4 5) & G22 Gen 5
Rating: 8.9/10
The WARRIORLAND OWB Kydex Holster Optics Cut is built for Glock owners who need a reliable and comfortable way to carry their firearms openly. This holster is designed for G21, G20 (Gen 3, 4, 5), and G22 Gen 5 models. It’s made from tough US Kydex that’s waterproof and easy to clean, making it great for daily use. The holster has a special cut to fit red dot sights and its edges are smoothed by hand for extra comfort.
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What We Like:
- The holster is made from strong, waterproof, and lightweight US Kydex.
- It’s designed with an optics cut, so you can use it with red dot sights.
- The edges are hand-polished for a comfortable feel against your body.
- The 1.75-inch paddle fits most belts securely and has a hook to keep it in place.
- It features a sweat shield to protect you from moisture.
- The adjustable retention system lets you set how tight the gun fits with a clear “click” sound.
- WARRIORLAND offers a lifetime warranty on their holsters.
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What Could Be Improved:
- This holster will not work with any laser or light attachments on your firearm.
This WARRIORLAND holster offers a secure and comfortable carry option for compatible Glock models. Its focus on durable materials and user comfort makes it a solid choice for open carry.
5. Glock 20 OWB Holster – USA Made – Fits Glock 20
Rating: 8.8/10
The Blade-Tech Signature OWB Holster is built for your Glock 20 or 21 (Gen 3, 4, 5). It’s made in the USA with strong, heat-resistant plastic. This holster fits your gun snugly and comfortably for open carry outside your waistband. It’s designed for right-hand users. You can carry your firearm with confidence.
What We Like:
- USA Made: It’s made with strong, heat-resistant plastic right here in America.
- Great Fit: This holster fits your Glock 20 or 21 perfectly, better than Kydex.
- Adjustable Retention: You can make the holster hold your gun tighter or looser.
- Secure Lock: It has a special guard that clicks when your gun is safe and secure.
- Optics Ready: It works with most red dot sights and tall sights.
- Versatile Mounting: It comes with a Tek-Lok that fits belts from 1.5 to 2.25 inches wide.
- Lifetime Warranty: Blade-Tech guarantees it for life against damage during normal use.
What Could Be Improved:
- The holster is designed for a specific grip angle, which might not suit everyone.
- While the Tek-Lok is secure, some users might prefer alternative mounting options for different carry styles.
This holster offers a secure and comfortable way to carry your Glock. Its durable construction and lifetime warranty make it a solid choice for everyday use.
Your Guide to the Best Holster for Glock 21 Gen 4
Choosing the right holster for your Glock 21 Gen 4 is super important. It keeps your firearm safe and ready when you need it. This guide will help you find the perfect fit.
Key Features to Look For
- Retention: This is how well the holster holds your Glock. You want it snug so it doesn’t fall out, but not so tight that it’s hard to draw. Look for adjustable retention screws.
- Draw Speed: How fast can you get your Glock out of the holster? A good holster makes drawing smooth and quick.
- Comfort: You’ll be wearing this holster a lot. It needs to feel good against your body, whether you carry it inside or outside your waistband.
- Concealment: If you’re carrying for self-defense, you want your Glock to be hidden. Some holsters are better at this than others.
- Durability: The holster needs to last. It should be made of strong stuff that won’t break easily.
Important Materials
What are holsters made of?
Most holsters for the Glock 21 Gen 4 are made from a few main materials:
- Kydex: This is a hard plastic that’s very popular. It holds its shape well and offers great retention. It’s also pretty lightweight.
- Leather: Leather holsters look classic. They can be comfortable and mold to your body over time. However, they might not offer the same level of retention as Kydex.
- Nylon: Nylon holsters are often softer and more flexible. They can be comfortable, but they might not hold your Glock as securely.
- Hybrid: These combine materials, like a Kydex shell with a soft backing. They try to give you the best of both worlds.
Factors That Improve or Reduce Quality
What makes a holster good or bad?
- Fit: A holster must be made specifically for the Glock 21 Gen 4. A bad fit means your gun might be loose or hard to draw.
- Adjustability: Being able to adjust how tight the holster holds your gun or the angle you carry it makes a big difference.
- Mounting Options: How does the holster attach to your belt or pants? Different clips or loops offer different levels of security and comfort.
- Sweat Guard: Some holsters have a sweat guard that protects your skin from the gun and your gun from sweat. This is a nice touch for comfort.
- Finish: A smooth finish on the inside of the holster prevents scratching your Glock.
User Experience and Use Cases
How do people use these holsters?
People use holsters for many reasons:
- Everyday Carry (EDC): Carrying your Glock concealed under your clothes for personal protection. Comfort and concealment are key here.
- Open Carry: Carrying your Glock visible, often for duty or sport. Retention and quick access are most important.
- Range Practice: Holsters help you practice drawing your firearm safely and efficiently. Durability and ease of use matter here.
- Competition Shooting: Holsters need to allow for very fast draws while keeping the firearm secure during movement.
When choosing, think about where and how you will use your Glock 21 Gen 4 the most. This will help you pick the holster that works best for you.
Frequently Asked Questions (FAQ)
Q: What is the best type of holster for concealed carry of a Glock 21 Gen 4?
A: For concealed carry, inside-the-waistband (IWB) holsters made of Kydex or hybrid materials are often the best. They offer good concealment and retention.
Q: Can I use a holster made for a Glock 17 on my Glock 21 Gen 4?
A: No, you should not. The Glock 21 Gen 4 is a larger pistol than the Glock 17. A holster designed for a Glock 17 will not fit properly and could be unsafe.
Q: How do I clean my Kydex holster?
A: You can clean a Kydex holster with mild soap and water. Use a soft cloth to wipe it down. Make sure it’s completely dry before putting your Glock back in.
Q: Will a holster scratch my Glock 21 Gen 4?
A: A well-made holster with a smooth interior finish should not scratch your firearm. Avoid holsters with rough or unfinished edges.
Q: What does “retention” mean in a holster?
A: Retention refers to how securely the holster holds your firearm. Good retention means your gun won’t accidentally fall out.
Q: Is it better to have adjustable retention or fixed retention?
A: Adjustable retention is generally better because you can fine-tune how tight the holster holds your Glock. This allows for a perfect balance between security and draw speed.
Q: What is an “open-top” holster?
A: An open-top holster doesn’t have a strap or cover over the slide. This allows for a faster draw but might offer slightly less retention than holsters with retention straps.
Q: How does carrying a Glock 21 Gen 4 affect holster choice?
A: The Glock 21 Gen 4 is a full-sized, .45 ACP pistol. Its larger size means you’ll need a holster specifically designed for it, and concealment might be more challenging than with smaller firearms.
Q: What is a “sweat guard” on a holster?
A: A sweat guard is a piece of material that extends between your body and the firearm. It helps prevent sweat from reaching your gun and can make carrying more comfortable.
Q: Where is the best place to buy a holster for my Glock 21 Gen 4?
A: You can find holsters at gun stores, online retailers specializing in firearms accessories, and directly from holster manufacturers.
In conclusion, every product has unique features and benefits. We hope this review helps you decide if it meets your needs. An informed choice ensures the best experience.
If you have any questions or feedback, please share them in the comments. Your input helps everyone. Thank you for reading.
Hi, I’m Hector Quintanilla, the creator of helmetslab.com.. As a passionate enthusiast and experienced expert in helmets, I’ve dedicated this platform to sharing my insights, knowledge, and hands-on experiences. Whether you’re seeking the best helmet for safety, comfort, or performance, my goal is to guide you with detailed reviews, tips, and advice. Ride safe, and let’s explore the world of helmets together!