The Mec-Gar Standard Blued Detachable 20-Round 9mm Luger Magazine (Model MGSW5920B, UPC 765595440135) is a high-capacity, quality-built replacement magazine engineered for classic Smith & Wesson 9mm pistols, including the S&W 659, 5900, 910, and 915. Built with durable construction and finished in a traditional blued coating, this 20-round detachable magazine is designed to deliver consistent feeding, reliable lock-up, and smooth performance—making it an excellent choice for range training, building a dependable spare-mag rotation, or upgrading your shooting sessions with fewer reload interruptions.
If you’re searching for a 20 round S&W 5900 magazine, a Mec-Gar MGSW5920B 9mm magazine, or a Smith & Wesson 659/910/915 high capacity magazine identified by UPC 765595440135, this Mec-Gar magazine offers the trusted quality and fitment serious shooters look for in aftermarket mags.
Built for Smith & Wesson 3rd Gen and compatible 9mm platforms
Magazine fitment is critical with any pistol—especially with classic S&W designs where correct geometry ensures reliable cycling. The MGSW5920B is designed to fit:
Smith & Wesson 659
Smith & Wesson 5900
Smith & Wesson 910
Smith & Wesson 915
These pistols are known for their durability and shootability, and a reliable magazine is the key to keeping them running smoothly. Mec-Gar’s platform-specific design helps ensure proper seating, consistent cartridge presentation, and dependable performance during normal use.
20-round capacity: maximize range time and training efficiency
A 20-round 9mm magazine is a standout upgrade for shooters who want to spend more time shooting and less time reloading. Higher capacity is especially useful for:
Range practice and training drills
Longer strings during cadence and transition work
Multi-mag loadouts for classes and structured practice
Shooters who enjoy fewer interruptions during sessions
For S&W 659/5900/910/915 owners, stepping up to 20 rounds can make range days noticeably smoother and more enjoyable.
Blued finish: classic look that matches your S&W pistol
The blued finish provides a traditional appearance that pairs perfectly with many classic Smith & Wesson pistols. In addition to aesthetics, bluing offers practical benefits such as:
A subdued, low-reflection surface
A classic “factory-correct” look for vintage-style pistols
A familiar finish that fits well with traditional handgun collections
With proper care and storage, a blued magazine remains a timeless, functional component that complements classic S&W styling.
Mec-Gar quality: trusted magazines with reliable performance
Mec-Gar is widely respected for producing magazines that combine quality materials, consistent manufacturing, and dependable performance. Shooters choose Mec-Gar because they want:
Reliable feeding with proper ammunition and maintenance
Strong construction built for routine use and training
Consistent fitment compared to unknown aftermarket options
A trusted solution for pistols where OEM mags may be harder to find
If you rely on your S&W for regular range use or you want to keep a classic pistol running without headaches, a quality magazine is one of the most important upgrades you can make.
Ideal for training, spares, and extending the life of classic pistols
The Mec-Gar MGSW5920B is a smart pick for:
Range sessions and high-volume practice
Shooters who want a dependable high-capacity option
Owners building a multi-mag setup for classes or drills
Replacing worn or unreliable magazines
Maintaining a reliable rotation for long-term ownership
Having extra magazines isn’t just convenient—it’s practical maintenance, especially for older pistol platforms.
Detachable design for easy loading, storage, and rotation
As a detachable magazine, the MGSW5920B supports:
Easy loading and unloading during sessions
Simple storage and transport with your range gear
Rotating magazines to reduce wear on springs over time
Faster reload practice and drill efficiency
Whether you’re a casual shooter or a dedicated trainer, detachable magazines make life easier at the range.
Product details for accurate ordering
To ensure you’re selecting the correct magazine, confirm these identifiers:
Brand: Mec-Gar
Type: Standard blued detachable pistol magazine
Caliber: 9mm Luger
Capacity: 20 rounds
Fits: S&W 659 / 5900 / 910 / 915
Finish: Blued
Model / Part Number: MGSW5920B
UPC: 765595440135
SEO keywords and search phrases (naturally included)
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Compliance note
Always follow local and state laws regarding magazine capacity and ownership. Confirm compatibility with your specific pistol model before purchase.
The bottom line
If you want a reliable, high-capacity magazine for your Smith & Wesson 659, 5900, 910, or 915, the Mec-Gar Standard Blued Detachable 20-Round 9mm Luger magazine (Model MGSW5920B, UPC 765595440135) is an excellent choice. Built for dependable feeding and smooth range performance, it’s perfect for training, spare-mag rotation, and making your classic S&W 9mm pistol even more enjoyable to shoot.
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