The ProMag Standard 15-Round .45 ACP Magazine for FN FNX – Blued Steel, Model FNHA5, UPC 708279013287 is an aftermarket detachable box magazine engineered as a replacement or spare for FN FNX-45 pistols. Constructed from heat-treated steel with a black oxide (blued) finish and equipped with a chrome-silicon spring and injection-molded follower, this 15-round magazine is designed to support reliable feeding and long service life for range, training, and defensive use. Gritr Sports+3ProMag Industries+3Palmetto State Armory+3
Platform Compatibility and Capacity
This ProMag FNHA5 magazine is specifically configured for the FN FNX-45 series of pistols:
The FNHA5 is marketed as a replacement or spare magazine for FNX-45 pistols, offering an alternative to OEM magazines while maintaining standard 15-round capacity. White Birch Armory+4A2 Firearms+4Frisco Guns+4
Magazine Body, Material, and Finish
ProMag manufactures the FNHA5 with durability and corrosion resistance in mind:
Some retailers note the mag body as stainless or carbon steel with a matte blued finish, but all reference a blued steel exterior optimized for environmental resistance and wear. Palmetto State Armory+2GunMag Warehouse+2
Internal Components: Follower and Spring
The internal components are designed to provide consistent cartridge presentation and long-term reliability:
The combination of a chrome-silicon spring and low-friction follower is intended to support reliable feeding and consistent slide lock-back when the magazine is empty, assuming proper maintenance and ammunition within FNX-45 specifications. Gritr Sports+3ProMag Industries+3Palmetto State Armory+3
Baseplate, Form Factor, and Handling
ProMag equips the FNHA5 magazine with a durable base assembly:
Baseplate: Impact-resistant polymer basepad, recognizable rounded or extended style depending on production, designed to absorb minor impacts and assist with seating and stripping the magazine. GunMag Warehouse+1
Detachable floorplate: The basepad can be removed to allow disassembly of the magazine for cleaning and inspection. GunMag Warehouse+2ProMag Industries+2
Profile: Double-stack .45 ACP geometry, proportioned for the FNX-45 grip frame and magwell, with a length similar to FN factory 15-round magazines. ProMag Industries+2GunMag Warehouse+2
The steel body and polymer base design aim to maintain a secure fit in the FNX-45 while providing enough surface area for positive insertion and removal.
Reliability, Origin, and Warranty
ProMag highlights key reliability and quality aspects for this magazine:
As with any magazine, end users should function-test the FNHA5 with their specific pistol and chosen ammunition, and follow routine maintenance practices to ensure reliable performance.
Dimensions, Weight, and Carry Considerations
Exact physical dimensions are not always listed, but typical characteristics can be inferred from retailer specifications and similar FNX-45 magazines:
The standard-length design makes this magazine well-suited for both concealed and open carry configurations where permitted, as well as for training and competition.
Typical Use Cases
The ProMag Standard 15rd .45 ACP FNHA5 magazine is intended for:
Replacement / spare magazine: Direct aftermarket option for FN FNX-45 owners needing additional magazines. White Birch Armory+3A2 Firearms+3Frisco Guns+3
Range and practice use: Extra mags reduce downtime between strings of fire, supporting realistic reload drills and high-volume training. GrabAGun+1
Home-defense or duty-ready setups: Additional capacity on hand for defensive configurations, subject to local magazine capacity regulations.
Users must ensure compliance with local laws regarding magazine capacity and possession; many retailers list shipping restrictions for certain states and jurisdictions. ProMag Industries+2Hinterland Outfitters+2
Technical Identification and Catalog Data
For inventory management, product listings, and SEO-focused content, the magazine can be identified with the following standardized details:
Including these details supports search accuracy for phrases like “ProMag FNHA5 FNX-45 .45 ACP 15rd blued steel magazine,” “FNH-A5 15 round FNX .45 mag,” or direct UPC-based lookups 708279013287.
In summary, the ProMag Standard 15rd 45 ACP Fits FN FNX Blued Steel Magazine (FNHA5, UPC 708279013287) is a U.S.-made, double-stack 15-round .45 ACP magazine for FNX-45 pistols, featuring a heat-treated blued steel body, chrome-silicon spring, injection-molded follower, and polymer baseplate. It serves as a cost-effective replacement or spare magazine option for FNX-45 owners who need additional capacity for range work, training, or defensive readiness, while maintaining compatibility with the factory magwell dimensions and control layout of the FNX-45 platform. Midwest Gun Works+5ProMag Industries+5Palmetto State Armory+5
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