The Glock 20 is a powerhouse, chambered in the formidable 10mm Auto, making it a favorite among those who need a reliable handgun for self-defense, hunting, or outdoor adventures.

Upgrading your Glock 20 can enhance its performance, accuracy, and overall experience. Here are some of the best upgrades to consider.

Top Upgrades

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Barrels & Parts⁠

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Slides & Parts⁠

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Triggers & Parts⁠

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Frames & Parts⁠

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Sights & Parts⁠

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Safeties & Parts⁠

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Action Parts⁠

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Grips⁠

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Hammer Parts⁠

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Recoil Parts⁠

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Magazines⁠

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Top 7 Best Upgrades for Glock 20

1. Trijicon RMR Type 2 Red Dot Sight

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Specifications

Model: RM06-C-700672

Dot Size: 3.25 MOA

Battery Life: Over 4 years of continuous use (at setting 4 out of 8)

Material: 7075-T6 aluminum

Waterproof: Up to 20 meters

Best Features

The Trijicon RMR Type 2 is renowned for its durability and performance. The 3.25 MOA dot is perfect for fast target acquisition, and the adjustable brightness settings ensure visibility in various lighting conditions. The rugged construction makes it resistant to impact and harsh environments.

Pros

Extremely durable

Long battery life

Clear and precise red dot

Adjustable brightness

Cons

Expensive

Requires a mounting plate for installation

Experience

Using the Trijicon RMR Type 2 on my Glock 20 has been a game-changer. The red dot sight significantly improves my target acquisition speed and accuracy, especially in dynamic shooting scenarios. The rugged design gives me confidence that it will withstand the recoil of the 10mm Auto.

Online Customer Comments

Many users on forums and review sites praise the Trijicon RMR Type 2 for its reliability and performance. One user mentioned, "It's the best red dot I've ever used. Perfect for my Glock 20."

2. Streamlight TLR-1 HL Weapon Light

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Specifications

Lumens: 1,000

Run Time: 1.5 hours

Battery: 2 x CR123A lithium batteries

Material: Aluminum

Waterproof: IPX7

Best Features

The Streamlight TLR-1 HL delivers an impressive 1,000 lumens of brightness, ideal for identifying threats in low-light situations. The quick-detach rail clamp design allows for easy attachment and detachment without the need for tools.

Pros

High brightness

Durable construction

Easy to mount and remove

Ambidextrous switch

Cons

Short battery life

Can be bulky for some users

Experience

Mounting the Streamlight TLR-1 HL on my Glock 20 has made a significant difference in low-light conditions. The intense beam illuminates my surroundings, ensuring I can see potential threats clearly. The quick-detach feature is convenient for when I need to remove the light quickly.

Online Customer Comments

Customers frequently highlight the Streamlight TLR-1 HL's brightness and durability. A reviewer stated, "This light is incredibly bright and easy to use. A must-have for any Glock 20 owner."

3. Lone Wolf AlphaWolf Barrel

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Specifications

Material: 416R stainless steel

Finish: Salt bath nitride

Twist Rate: 1:16

Compatibility: Drop-in fit for Glock 20

Best Features

The Lone Wolf AlphaWolf barrel is designed for improved accuracy and reliability. The stainless steel construction ensures durability, while the precise machining enhances the Glock 20's performance.

Pros

Improved accuracy

Durable material

Easy to install

Compatible with factory ammunition

Cons

Higher cost than factory barrels

May require minor fitting

Experience

The Lone Wolf AlphaWolf barrel has noticeably improved my Glock 20's accuracy. The drop-in fit made installation straightforward, and the enhanced performance is evident during target shooting sessions. The barrel's durability gives me peace of mind for long-term use.

Online Customer Comments

Users appreciate the AlphaWolf barrel for its accuracy and reliability. One user mentioned, "This barrel transformed my Glock 20. The accuracy and consistency are top-notch."

4. ZEV Technologies Fulcrum Adjustable Trigger

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Specifications

Material: Aircraft-grade aluminum

Adjustability: Pre-travel and over-travel

Compatibility: Glock 20 Gen 3-4

Best Features

The ZEV Technologies Fulcrum trigger offers adjustable pre-travel and over-travel, allowing for a customized trigger pull. The aircraft-grade aluminum construction ensures durability and a crisp, clean break.

Pros

Adjustable for a personalized feel

Smooth trigger pull

Enhanced accuracy

Durable construction

Cons

Requires gunsmith installation for optimal performance

Higher cost

Experience

Upgrading to the ZEV Technologies Fulcrum trigger was one of the best decisions I've made for my Glock 20. The adjustable trigger pull has improved my accuracy and overall shooting experience. The smooth break and reset are significantly better than the factory trigger.

Online Customer Comments

Many Glock 20 owners rave about the ZEV Fulcrum trigger. One review stated, "This trigger is a game-changer. The adjustability and smooth pull have made a huge difference in my shooting."