Most Reliable Extended Magazines for Popular Handguns

Extended magazines are a great way to boost the capacity of your handgun, making it a more effective tool for self-defense, competition, or recreational shooting. If you’re looking for an extended magazine to maximize your handgun’s performance, choosing a reliable and durable option is crucial.

In this guide, we’ll break down the best extended magazines available for some of the most popular handguns, helping you find the best choice for your needs. Whether you’re a competitive shooter, a law enforcement professional, or a gun enthusiast, an extended magazine can significantly improve your shooting experience.

1. Best Overall Extended Magazine: Glock 17/19 Extended Magazine (17-Round)

Price Range: $25 – $40

For Glock users, the Glock 17/19 Extended Magazine is a classic choice that provides both reliability and high capacity. This factory-made magazine is designed for Glock 17 and Glock 19 models, offering increased ammo capacity without compromising the weapon’s function.

Key Features:

  • 17-Round Capacity (for Glock 17, 19 models).

  • Durable Polymer Construction: Designed to withstand heavy use.

  • Precision Engineering: Engineered to work flawlessly with Glock handguns.

  • Easy Loading: Comes with a built-in baseplate for added grip and a smoother load.

Why It’s Great:

  • Reliability: As a factory-made product, it guarantees compatibility and consistent performance.

  • Smooth Feeding: Known for flawless feeding and ejection of rounds.

  • Simple Upgrade: Adds capacity without making the handgun unmanageable in terms of grip or handling.

2. Best Extended Magazine for the Sig Sauer P320: Sig Sauer P320 21-Round Extended Magazine

Price Range: $40 – $60

The Sig Sauer P320 is a popular choice for both military and law enforcement, and the 21-round extended magazine is an excellent upgrade for anyone who wants to maximize capacity. Sig Sauer’s factory magazines are known for their quality and dependability.

Key Features:

  • 21-Round Capacity.

  • Durable Steel Construction: Provides longevity and consistent feeding.

  • Factory Design: Designed to work seamlessly with Sig Sauer P320.

  • Ergonomic Design: Ensures that the magazine fits comfortably in the hand.

Why It’s Great:

  • Superior Reliability: As a factory part, it offers outstanding reliability and smooth function.

  • Quality Build: Constructed with high-quality steel for enhanced durability.

  • Perfect Fit: The design integrates well with the P320’s grip without altering the ergonomics.

3. Best Extended Magazine for the Smith & Wesson M&P Shield: ProMag S&W M&P Shield 9mm 15-Round Magazine

Price Range: $20 – $35

For those who love the Smith & Wesson M&P Shield, the ProMag 15-Round Extended Magazine offers a boost in capacity while still fitting well in the compact frame of the Shield. It’s an affordable and reliable choice for those looking to increase ammo capacity without sacrificing quality.

Key Features:

  • 15-Round Capacity for 9mm.

  • Steel Construction with polymer base plate.

  • Easy to Load: ProMag’s magazine follower makes it easy to load rounds into the mag.

  • Compatible with both M&P Shield 9mm and M&P Shield 40 S&W.

Why It’s Great:

  • Affordable: Provides a high-capacity option at an affordable price point.

  • Reliable: ProMag is known for producing dependable aftermarket magazines.

  • Great Fit: The magazine adds extra rounds without making the firearm bulky or unbalanced.

4. Best Extended Magazine for the CZ 75: Mec-Gar CZ 75B 18-Round Extended Magazine

Price Range: $30 – $50

For fans of the CZ 75, the Mec-Gar CZ 75B 18-Round Extended Magazine is a top choice. Mec-Gar is known for producing high-quality aftermarket magazines that are as reliable as factory-made versions.

Key Features:

  • 18-Round Capacity.

  • Steel Construction with durable polymer baseplate.

  • Smooth Feeding: Known for providing consistent, jam-free shooting.

  • Proven Quality: Used by military and law enforcement professionals worldwide.

Why It’s Great:

  • Durability: Mec-Gar magazines are built to last, even under heavy use.

  • Flawless Function: Designed for smooth, reliable feeding with minimal misfeeds or failures.

  • Perfect for Competitive Shooters: Ideal for those who want more rounds for IPSC or USPSA shooting.

5. Best Extended Magazine for the Glock 43: Pearce Grip Glock 43 10-Round Extension

Price Range: $15 – $25

The Glock 43 is a popular choice for concealed carry, and although it has a smaller capacity than some full-sized handguns, Pearce Grip’s 10-Round Extension gives you a little extra without compromising its compact form.

Key Features:

  • Adds One Round to the standard 6-round magazine (total of 10 rounds).

  • Easy Installation: Simple to add to the existing Glock 43 magazine.

  • Polymer Construction: Keeps the magazine lightweight and durable.

  • Compact Design: Doesn’t add significant bulk, making it ideal for concealed carry.

Why It’s Great:

  • Perfect for Concealed Carry: Increases capacity while still fitting comfortably in your holster.

  • Affordable: Adds extra rounds without the high price tag of larger extended magazines.

  • Improved Comfort: The extension improves grip for those with larger hands, making it more comfortable to shoot.

6. Best Extended Magazine for the Springfield XD-S: Springfield Armory XD-S 9mm 9-Round Extended Magazine

Price Range: $30 – $45

For owners of the Springfield XD-S, the 9-Round Extended Magazine provides a great balance between extra capacity and easy handling. The XD-S 9mm is known for its accuracy and compact design, and this extended magazine enhances its versatility.

Key Features:

  • 9-Round Capacity (for 9mm models).

  • Factory-Made: Manufactured by Springfield Armory for perfect compatibility.

  • Durable Construction: Made with high-quality materials for long-lasting performance.

  • Sleek Design: The magazine extension blends seamlessly with the XD-S for improved aesthetics.

Why It’s Great:

  • Factory Reliability: Springfield Armory’s factory magazines are renowned for their dependability.

  • Enhanced Capacity: Perfect for those who need a few more rounds without compromising concealability.

  • Comfortable: Doesn’t add much weight, making it easy to carry concealed.

7. Best Extended Magazine for the Ruger SR1911: Wilson Combat 10-Round Extended Magazine

Price Range: $35 – $55

For 1911 enthusiasts, Wilson Combat’s 10-Round Extended Magazine for the Ruger SR1911 is a must-have. Wilson Combat is renowned for producing some of the best magazines in the firearm industry, and their 1911 mags are no exception.

Key Features:

  • 10-Round Capacity for 45 ACP.

  • Heavy-Duty Steel Construction: Designed for rugged use and durability.

  • Reliable Feeding: Ensures consistent, smooth feeding during rapid fire.

  • Polymer Base Plate: Provides a better grip and prevents baseplate damage.

Why It’s Great:

  • Professional-Grade Quality: Wilson Combat’s reputation for producing reliable and durable magazines is unparalleled.

  • Excellent Performance: Known for flawless feeding, even with high-powered ammunition.

  • Perfect for Competition: Ideal for those using the SR1911 in competitive shooting environments.

Conclusion: Choose the Right Extended Magazine for Your Handgun

When selecting an extended magazine for your handgun, the most important factors to consider are reliability, durability, and fit. Whether you’re upgrading for self-defense, target shooting, or competition, a high-quality extended magazine can improve your shooting experience and efficiency.

Be sure to choose a magazine that matches your specific model and shooting style. From factory-made options like Glock and Sig Sauer to aftermarket brands like ProMag and Wilson Combat, there’s an extended magazine out there that will enhance your handgun’s performance.

Scroll to Top