Upgrading capacity and reliability for the FN Five-SeveN platform often starts with the magazine. A well-built extended magazine can improve reload cadence, reduce reload frequency on the range, and provide a consistent feeding interface under stress. For owners of the FiveSeven pistol who want durable, U.S.-made hardware, this option deserves a close look.

PROMAG FN FIVE-SEVEN
This extended 30round magazine for the FiveSeven pistol in 5.7x28mm features an injection molded housing and follower constructed of impact resistant glassfilled nylon polymer for durability. The spring is precision wound from heat-treated Chromesilicon wire for reliable feeding. All components are proudly made in the U.S.A. Shop this product

Key features and construction

The PROMAG FN FIVE-SEVEN extended magazine emphasizes material selection and manufacturing technique. The injection molded housing and glass-filled nylon follower resist impact and deformation that can cause feeding issues after repeated drops or hard use. The Chromesilicon spring is heat-treated and precision wound to maintain consistent tension across all 30 rounds, which helps prevent stovepipes and misfeeds common with lower-quality aftermarket magazines. At an MSRP of $36.99, it provides a budget-friendly capacity upgrade without sacrificing robustness.

Caliber considerations: 5.7x28mm

The 5.7x28mm cartridge is known for high velocity, flat trajectory, and relatively low felt recoil in the FiveSeven pistol. That combination makes the platform well-suited to rapid follow-up shots and extended target sessions. An extended 30-round mag like this one maximizes on-target time between reloads for training, competition, or defensive carry where local laws allow. Ensure ammunition selection and local regulations are considered when increasing capacity.

Fit, reliability, and field use

Designed specifically for the FiveSeven, this PROMAG magazine lists compatibility across various models and is engineered to lock up and feed consistently when maintained. The durable polymer follower and robust spring reduce the need for frequent replacement parts. For tactical-minded shooters, the extra rounds mean fewer reloads during drills; for range users, it reduces interruptions to work on fundamentals. View product details and pricing

For FiveSeven owners seeking a balance of capacity, durability, and value, this PROMAG FN FIVE-SEVEN 30-round magazine is a practical upgrade. Click to check availability and purchase from our shop page where the product is shown with a direct buy link. Check current availability

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