M&P 40 Extended Magazine

Stanley Rivera
15 min readMar 24, 2024


Welcome to our roundup of the best M&P 40 Extended Magazine options on the market! In this article, we’ll be exploring top-rated magazines that offer extended capacity and reliable performance for your M&P 40 handgun. From durability to ease of use, we’ve picked out the finest options to help you make an informed decision. Whether you’re a seasoned shooter or just starting out, our review will ensure an enjoyable experience with your new extended magazine.

The Top 11 Best M&P 40 Extended Magazine

  1. Customized M&P Shield Magazine Holder, Universal Attachment — The C&G Holsters Single Universal IWB/OWB Kydex Mag Holder offers custom versatility and exceptional durability for M&P 40 Shield 9/40 Plus magazine carriers, crafted with precision in the USA.
  2. Versatile M&P 22 Compact Magazine Holster — Secure magazine holding for Taurus G3C/G2C/G2S, Millennium G2 PT111/PT140, and M&P 22 Compact series, featuring adjustable and removable ambidextrous design.
  3. Sleek Glock Magazine Extension for Optimal Performance — Odin Works Mag EXT: Elevate your performance with a custom-built GLOCK PMB for M&P Shield 9+5 Blk, ensuring ergonomic comfort and rapid mag changes.
  4. Custom M&P Shield Magazine Holder with Durability Focus — The C&G Holsters OWB Double Flat M&P Shield 9/40 Magazine Holder, with a perfect 4.9 rating and NTOA recommendation, offers precision manufacturing, strength, and rust prevention, making it the ultimate choice for gun enthusiasts.
  5. Pocket-sized 9mm Magazine Holder for M&P Shield — Experience ultimate convenience and versatility with the 1791 Snag Mag, the perfect 9mm Magazine Holder designed for your Smith & Wesson Shield 9/40.
  6. Walther PK380 8-Round Stainless Steel Extended Magazine — Get your hands on the Walther PK380 8RD Mag, a stainless steel extended magazine, delivering a reliable and high-capacity 8 rounds for your 380 ACP firearms.
  7. XD-M Extended Magazines for XD(M) Pistols — Boost your XD(M) series pistol’s performance with premium replacement magazines, offering extended capacity, sleek backstrap compatibility, and enhanced reliability. Perfect companions for your Springfield Armory XD-M.
  8. Smith & Wesson M&P 22 Compact 7-Round Magazine — Matte Black — Experience reliable performance and sleek design with the Smith & Wesson SW 3009877, featuring a .40 caliber magazine, stainless steel magazine body, and a matte black finish. Trusted by many with a 4.7-star rating and 26 reviews.
  9. Springfield XD Magazine Pouch for 45ACP Black (Ambidextrous) — Securely carry and access your Springfield XD 45ACP magazines with the Springfield XD Gear Magazine Pouch, designed for left and right-handed use and crafted in reliable black polymer.
  10. S&W M&P 5" .40 Cal MagDraw OWB Holster — Perfect for Carrying Extended Magazines — Experience a comfortable, secure, and stylish carry solution with the S&W M&P 5" .40 cal Pro Series MagDraw OWB Holster, designed for easy magazine access and available in over 75 color options.
  11. Adjustable M&P 40 Extended Magazine Holder with MOLLE Attachment — Ensure seamless gun storage and transport with the Orpaz Shoval Series, a double magazine holster compatible with S&W M&P 40 extended magazines, providing adjustable retention and modular access through MOLLE attachment systems.

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Customized M&P Shield Magazine Holder, Universal Attachment


Experience the versatility and convenience of C&G Holsters’ Single Universal IWB/OWB Kydex Magazine Holder, designed for all your concealed carrying needs. Made with top-quality American craftsmanship, this sleek and durable holster offers adjustable carry positions for ultimate comfort and ease of use.

With a custom-fitted design for M&P 40 Extended Magazine, this belt loop-equipped mag holder is perfect for seamless concealment. The Kydex material guarantees a flawless fit while adding a touch of style to your accessory.

Durability meets innovation with this versatile holder, which is also compatible with a wide range of other handguns. Customers praise the sturdy design, ease of adjustment, and secure clip attachments, making it a go-to choice for concealed carry enthusiasts everywhere.

For those seeking a premium concealed carry solution without the hefty price tag, the Single Universal IWB/OWB Kydex Magazine Holder from C&G Holsters is a no-brainer. Embrace the seamless style and unmatched reliability this universal holster provides for all your handgun magazines.

Versatile M&P 22 Compact Magazine Holster


I recently got my hands on this magazine holster and it’s been quite a game-changer in my daily routine. As someone who’s constantly on the go with my trusty Taurus G3C, having a reliable and secure way to carry extra mags has been a lifesaver.

One of the first things I noticed about this holster is its universal fit. Whether I’m wearing it in the inside or outside, it’s comfortable and secure. The 1.5" standard belt clip makes it easy to attach and remove, with no fussing about.

What really stands out in this holster is its adjustability. The included 1/8 allen wrench allows for fine-tuning of retention, making sure your magazine stays exactly where it needs to be. It’s a feature that I truly appreciate, as it eliminates the risk of the magazine falling out when you need it most.

The ambidextrous nature of the holster is an added bonus. I’m right-handed, but there have been times when I need to switch the holster to my left side for convenience. With this holster, I can easily do that, thanks to the allen wrench.

However, there are a few cons to mention. The holster doesn’t fit snugly with all magazine types, especially those with wider bodies or different dimensions. I had to make a few adjustments with a heated air gun to accommodate some single-stack mags, which proved a bit challenging.

Another minor issue is the weight. At 1.5 oz, it’s not exactly lightweight, but it’s a tradeoff I’m willing to make for the security and convenience it offers.

In conclusion, this magazine holster has been a welcome addition to my EDC, and I highly recommend it for Taurus G3C/G2C/G2S and Millennium G2 PT111/PT140 users. With its ease of adjustment, universal compatibility, and secure retention, it’s a reliable choice for gun owners looking for an efficient way to carry extra magazines.

Sleek Glock Magazine Extension for Optimal Performance


I’ve been using the Odin Works Mag EXT for M&P 9 +5 Blk, and it has been a game changer in my daily shooting practice. The ergonomic design fits perfectly in the palm of my hand, making it easy to strip the magazine and change it quickly.

The weighted base allows for rapid mag changes, and the 5 extra rounds give me that extra boost I need during competitions. However, it did take me a little while to figure out the appropriate screw lengths to securely attach the extension. Overall, I’d highly recommend this product to any serious shooter looking to improve their accuracy and speed.

Custom M&P Shield Magazine Holder with Durability Focus


As a recent acquaintance with the C&G Holsters OWB Double Flat M&P Shield magazine holder, I found it to be an excellent addition to my concealed carry setup. The high durability and precise manufacturing, which ensures it is within. 003 inches of accuracy, was instantly apparent. The sleek black aesthetics only added to the overall appeal.

Now, let’s dive into my experience with this well-crafted magazine holder. I appreciated its compatibility with M&P Shield pistols, giving me reliable security and easy accessibility. The magazine holder’s ability to work with various sizes of guns, thanks to its ambidextrous design, was a significant plus for both right-handed and left-handed users.

However, this product did come with its share of downsides. For one, the plastic clip that held the holster to my belt was somewhat flimsy and tended to bend out of shape with prolonged use. While it does have a strong hold on the mags, it may not be the most ideal clip style for all belt designs. The sizing of the belt loop also left room for improvement, as it felt slightly too large for my belt.

Despite these minor drawbacks, I’ve grown to appreciate the comfort and functionality that the C&G Holsters Magazine Holder OWB offers. It holds mags securely and conveniently and has been a reliable addition to my daily carry. When it comes to quality, customer service, and attention to detail, this is a product I can wholeheartedly support.

Pocket-sized 9mm Magazine Holder for M&P Shield


The Snagmag M&P Shield 9/40 RH is the perfect companion for gun enthusiasts, especially those proud owners of a Smith & Wesson Shield 9/40. This magazine pouch is an essential addition to any accessory collection, thanks to its high-quality construction, unobtrusive design, and snug fit.

Made from durable genuine leather, the Snagmag is both lightweight and comfortable, making it perfect for everyday use. It sports a sleek black finish that blends seamlessly with any attire, ensuring you can carry your extra ammo discreetly. The right-hand orientation is a practical choice for most gun users, allowing for a fast draw when needed. The belt clip attachment makes this magnetic holder convenient and easy to use, whether you’re engaging in casual or tactical use.

The genuine leather construction ensures durability and longevity, allowing you to rely on it during critical situations. The Snagmag fits perfectly on the Smith & Wesson M&P Shield 9/40, with a snug fit that prevents rattling. With its ease of access and high functionality, the Snagmag is truly a game-changer when it comes to your safety and self-defense gear.

Although some might find it takes a bit of practice to retrieve the magazine without using both hands, the Snagmag’s positives far outweigh the negatives. Its affordability, combined with its premium features, makes it a four-star product in my book. As a firearm owner, the Snagmag M&P Shield 9/40 RH is an essential accessory I’m glad I discovered.

Walther PK380 8-Round Stainless Steel Extended Magazine


I’ve been using the Walther PK380 8RD Mag as my go-to extended magazine for my Walther PK380 firearm. This stainless steel mag really stands out in how well it fits and functions with the firearm. The shiny silver finish adds an extra touch, making it aesthetically pleasing too. One thing I really appreciate is the capacity of 8 rounds, allowing for a full magazine while ensuring smooth loading and easy handling.

However, there are a couple of things that could be improved. Occasionally, I’ve noticed a bit of difficulty when removing the magazine from the gun, which can be a bit frustrating at times. Additionally, the slightly higher price point compared to some other aftermarket options makes one wonder if it could be a little more affordable.

Overall, my experience has been a positive one, as this magazine has provided great performance and reliability in my Walther PK380 firearm. Though there are minor drawbacks, the pros definitely outweigh the cons, making it a worthwhile investment for anyone seeking a well-crafted extended magazine for their firearm.

XD-M Extended Magazines for XD(M) Pistols


As a gun enthusiast, I recently came across these replacement magazines designed for the Springfield Armory XDM50111 XD-M. The 40 S&W compact 16RD stainless extended version caught my eye due to its sleek design and reliable performance.

The magazine’s primary benefit is its compatibility with different backstrap sizes, which allows it to fit seamlessly in various gun models. The #1, #2, and #3 on the magazine indicate the specific backstrap size it is compatible with, giving you the freedom to choose the perfect fit for your XD(M) pistol.

While handling this magazine, I noticed the quality of the materials used. The stainless steel construction adds to its durability and provides a smooth finish during loading and unloading. Moreover, the high capacity of the magazine, holding 16 rounds, ensures you can stay in the game for extended periods.

However, my experience with this magazine also highlighted a minor issue: its size and compatibility with smaller gun frames. It might be uncomfortable for some users, especially those with a smaller grip frame where the magazine protrudes more than usual.

Overall, the Springfield Armory XDM50111 XD-M replacement magazines offer a reliable and high-quality solution for enthusiasts seeking a sleek and durable addition to their arsenal.

Smith & Wesson M&P 22 Compact 7-Round Magazine — Matte Black


After trying out the Smith & Wesson M&P 22 Compact Magazine, I must say it’s a pretty reliable and sturdy accessory for my firearm. The matte black finish gives it a sleek look that blends well with my gun. The stainless steel magazine body and polymer base plate make it durable and able to withstand daily use without any noticeable wear and tear.

The most notable feature of this magazine, in my experience, is its improved spring and follower mechanism that makes loading a breeze. Compared to the original magazine that came with my gun, this one feels less stiff, which makes it more convenient to load. However, I also faced some challenges with the magazine’s capacity — I found it a little difficult to load the last couple of rounds due to the spring pressure.

Overall, the Smith & Wesson M&P 22 Compact Magazine is a great addition to any firearm enthusiast’s collection. Although there are some minor issues with its performance, it’s ultimately a reliable and high-quality product that I would recommend to others.

Springfield XD Magazine Pouch for 45ACP Black (Ambidextrous)


The Springfield XD Gear Magazine Pouch is a nifty accessory for any XD 45ACP enthusiast. As a reviewer who’s been using it for a while, I can tell you it has made my life a lot easier. The ambidextrous design means I can use it comfortably with either hand, which is a great feature for someone like me who’s always on the go.

One of the standout features of this pouch is its durability. It’s been through a lot with me, from strenuous outdoor activities to everyday carry, and it’s held up without a fuss. However, there’s always room for improvement, and I wish it was a bit more discreet. It’s quite noticeable when it’s attached to my gear, which can be a downside in certain situations.

All in all, the Springfield XD Gear Magazine Pouch is a reliable, functional, but not entirely inconspicuous accessory. It’s a solid choice for anyone looking to add a little extra convenience to their XD 45ACP carrying experience.

S&W M&P 5" .40 Cal MagDraw OWB Holster — Perfect for Carrying Extended Magazines


The S&W M&P 5". 40 cal Pro Series MagDraw OWB Holster has become a reliable companion in my everyday life. The sleek and ergonomic design gives me a comfortable carry experience without adding bulk or material to my everyday outfit. The most impressive feature is its adjustable retention, which ensures a perfect fit for my specific model.

The 15-degree forward and reverse adjustment allow me to carry my spare magazines with ease. The stock photo might show a Glock 19 MagDraw Holster, but don’t worry — your holster will reflect the gun model you select. The silky smooth edges and rock-solid paddle clip make this holster a secure and stylish option for everyday carry.

Adjustable M&P 40 Extended Magazine Holder with MOLLE Attachment


I recently had the chance to try out the Orpaz Shoval Series double magazine holster. This holster is compatible with the S&W M&P 40 Magazine, allowing me to stay prepared for any situation. I was particularly impressed with its adjustable rotation and retention features, ensuring my magazines stay secure.

The holster’s high-quality impact-resistant polymer design, made in Israel, adds an extra layer of durability and reliability. I also appreciated the MOLLE attachment, which gives me 100% modularity and easy access from my vest or pack. The fact that it fits all mil-spec MOLLE systems is a definite plus.

However, I did notice a minor inconvenience. Since this holster is designed for the S&W M&P 40 Magazine, there might be some compatibility issues with other brands or sizes. Overall, the Orpaz Shoval Series double magazine holster is a great choice for those seeking a reliable and versatile accessory for their firearms.

Buyer’s Guide

When it comes to choosing the right M&P 40 Extended Magazine for your needs, there are several factors to consider. This buyer’s guide will help you make an informed decision by detailing important features, considerations, and general advice about the product category.

1. Capacity


The capacity of an M&P 40 Extended Magazine directly impacts the number of rounds you can fire without reloading. Standard capacity magazines typically hold 10 rounds, while extended capacity magazines can hold up to 17 rounds or more. Consider your desired capacity and the specific features offered by various mag options depending on your personal preference and intended use.

2. Material

M&P 40 Extended Magazines can be made from a range of materials, including polymer, stainless steel, and other alloys. Each material has its own unique benefits, such as durability, weight, and cost. Polymer magazines tend to be lightweight and affordable, while steel magazines can be more costly but offer increased durability in rough handling conditions.

3. Brand Compatibility

Ensure the M&P 40 Extended Magazine you choose is compatible with your specific handgun model. While most magazines will work with multiple handguns, some may require special versions or modifications to fit properly. Perform thorough research or consult the manufacturer for compatibility information before making your purchase.


4. Price

Budget constraints can play a significant role in your purchasing decision. Keep in mind that extended capacity magazines tend to be more expensive than standard capacity options. Take the time to compare prices and features among various brands and models to find the best combination of quality and cost that fits your needs.

5. Reliability and Durability

Reliability and durability are crucial when selecting an M&P 40 Extended Magazine. A well-constructed magazine should provide consistent performance and function without failure in a variety of shooting conditions. Durable materials and robust construction can also extend the lifespan of the magazine, saving you money in the long run.

6. Ergonomics and Design


Consider the design and ergonomics of the magazine when making your purchase. A well-designed magazine should be comfortable to handle and grip during firing, with textured surfaces or other features to prevent slippage. Additionally, a streamlined design can help reduce snagging or catching during holstering and reloading.

7. Brand Reputation and Warranty

Choose a reputable brand with a history of quality products and customer satisfaction. Many well-known firearm manufacturers offer manufacturer warranties to protect your purchase against defects or other issues. Look for a warranty that covers both the magazine and any included accessories to ensure peace of mind.

8. Maintenance and Cleaning Requirements

M&P 40 Extended Magazines require regular maintenance to maintain optimal performance and increase their lifespan. Be sure to follow the manufacturer’s recommendations for cleaning and maintenance procedures, as well as any specific recommendations for your handgun model.

Remember to always handle and store your magazines responsibly, and consider purchasing multiple magazines for optimal performance and convenience during extended shooting sessions.



What is the M&P 40 Extended Magazine?

The M&P 40 Extended Magazine is an extended capacity magazine designed specifically for the S&W M&P 40 pistol series. It provides gun owners with more ammunition capacity, which is ideal for self-defense or other scenarios where rapid reloading may be necessary.

Is the M&P 40 Extended Magazine easy to install?


Yes, the M&P 40 Extended Magazine is easy to install. Simply remove the standard magazine from your firearm, insert the extended magazine, and start using your S&W M&P 40 pistol.

What are the dimensions of the M&P 40 Extended Magazine?

The dimensions for the M&P 40 Extended Magazine are 5.32 inches (135.15 millimeters) in length, 1.05 inches (26.70 millimeters) in width, and 0.65 inches (16.60 millimeters) in height. These dimensions accommodate the increased capacity of the extended magazine without hindering the gun’s operation.

What material is the M&P 40 Extended Magazine made from?

The extended magazine is made from high-quality, durable materials designed to reliably hold more ammunition. Specifically, it is made from a reinforced polymer material that is resistant to wear and tear, ensuring long-lasting performance.

What is the capacity of the M&P 40 Extended Magazine?

Depending on the specific model, the M&P 40 Extended Magazine can hold between 14 and 17 rounds of standard. 40 S&W ammunition, providing gun owners with more ammunition capacity than a standard magazine.

How does the M&P 40 Extended Magazine perform compared to a standard magazine?

The M&P 40 Extended Magazine performs exceptionally well compared to a standard magazine. The extended design allows for increased ammunition capacity while maintaining reliability and compatibility with your S&W M&P 40 pistol. The additional capacity can be especially beneficial in high-stress self-defense scenarios where rapid reloading may be necessary.