The ProMag Standard 15-Round .40 S&W Magazine for Sig Pro – Blued Steel, Model SIGA13, UPC 708279013478 is an aftermarket detachable box magazine engineered for Sig Sauer Sig Pro series pistols chambered in .40 S&W. Built from heat-treated steel with a durable black oxide (blued) finish, this 15-round extended magazine is designed to offer reliable feeding performance and increased capacity for defensive carry, duty use, and range practice. Gritr Sports+4ProMag Industries+4Custom Gun Solutions+4
Platform Compatibility and Caliber
This ProMag SIGA13 magazine is specifically configured for the Sig Sauer Sig Pro line in .40 S&W:
It is intended as a replacement or spare magazine and is marketed as compatible with Sig Pro pistols, giving users an alternative to factory magazines at a competitive price point. Custom Gun Solutions+2Order Gun Magazines USA+2
Magazine Body, Material, and Finish
The SIGA13 magazine body is built for strength and corrosion resistance:
This steel construction supports consistent geometry for secure magazine seating, positive lock-up in the magwell, and repeatable feeding performance over many loading cycles.
Internal Components: Follower and Spring
ProMag equips the SIGA13 with robust internal components designed for smooth operation:
The combination of chrome-silicon spring material and a polymer follower is intended to support reliable feeding, from the first round to the last, when the magazine is properly maintained.
Baseplate, Disassembly, and Maintenance
The base assembly is designed with durability and serviceability in mind:
Baseplate material: Injection-molded polymer floorplate, selected for impact resistance and toughness. Order Gun Magazines USA+2MidwayUSA+2
Removable floorplate: Allows the magazine to be disassembled for cleaning and maintenance—important for users operating in dusty, sandy, or high-round-count environments. Gritr Sports+1
Routine maintenance (periodic cleaning of the body, follower, and spring) helps maintain smooth feeding and prolong the service life of the magazine, particularly when used regularly at the range or in training.
Dimensions, Form Factor, and Handling
While dimensions may vary slightly by source, the SIGA13 is a standard-length extended magazine for the Sig Pro in .40 S&W:
The extended 15-round format typically results in a slightly longer profile than reduced-capacity magazines, offering additional grip surface for the support hand and more on-board ammunition without dramatically affecting pistol balance.
Reliability, Origin, and Warranty
ProMag markets the SIGA13 as a durable, reliable magazine option:
Users should always function-test magazines with their specific pistol and chosen ammunition and follow all manufacturer recommendations for safe operation.
Typical Use Cases
The ProMag Standard 15rd .40 S&W SIGA13 magazine is suited for:
Range and practice use: Extra magazines on hand reduce reloading interruptions and allow realistic training drills.
Home-defense or duty setups: Increased capacity over reduced-round magazines, while retaining a robust steel construction.
Spare or replacement roles: A cost-effective backup to OEM magazines for shooters who own Sig Pro series pistols in .40 S&W. Gritr Sports+3GunMag Warehouse+3Order Gun Magazines USA+3
As always, owners must comply with local laws regarding magazine capacity and use.
Technical Identification and Catalog Data
For inventory management, listing, and SEO-optimized product pages, this magazine can be described with the following standardized details:
Product name: ProMag Standard 15rd .40 S&W Magazine for Sig Pro, Blued Steel
Manufacturer: ProMag Industries
Model / Part Number: SIGA13 (also referenced as SIG-A13) GunBroker+2Nexgen Outfitters+2
UPC / Barcode: 708279013478 ProMag Industries+1
Caliber: .40 S&W
Capacity: 15 rounds
Body material: High-carbon heat-treated steel
Finish: Blued / black oxide
Follower: Injection-molded polymer
Spring: Heat-treated chrome silicon wire
Baseplate: Polymer, removable
Firearm fit: Sig Sauer Sig Pro pistols chambered in .40 S&W Gritr Sports+3GunMag Warehouse+3Custom Gun Solutions+3
These identifiers help ensure accurate matches for search terms such as “ProMag SIGA13 15-round Sig Pro .40 mag,” “Sig Pro .40 S&W 15rd blue steel magazine,” or by UPC 708279013478.
The End
