The ProMag Steel Handgun Magazine for Sig Sauer P290 9mm – 10-Round, Blued Finish, SKU SIG 19 / SIG19, UPC 708279013300 is an aftermarket box magazine engineered specifically for the SIG Sauer P290 series of 9mm subcompact pistols. Built from heat-treated steel with a blue/black oxide finish, this single-stack magazine increases on-board capacity to 10 rounds while maintaining a compact profile suitable for concealed carry, training, and range use.
Platform Compatibility and Capacity
This magazine is designed to work with the Sig Sauer P290 9mm pistol family: ProMag Industries+2Palmetto State Armory+2
It is a direct-fit replacement or supplemental magazine for the P290, intended to function as a faithful clone of the original equipment while offering extended capacity over standard 6- or 8-round factory mags. GunMag Warehouse+2MidwayUSA+2
Magazine Body, Material, and Finish
The ProMag SIG 19 magazine body is constructed to withstand regular use and environmental exposure:
This steel construction provides rigidity and dimensional stability, helping to ensure reliable insertion, retention, and feeding when used with properly functioning firearms.
Internal Components: Spring and Follower
ProMag uses durable internal components to support smooth feeding cycles:
The combination of a chrome-silicon spring and polymer follower is intended to promote consistent cartridge presentation and reduce the likelihood of feeding malfunctions when the magazine is properly maintained.
Baseplate, Grip Extension, and Handling
Most listings specify a polymer floorplate / baseplate, often with an integrated grip extension:
The extended base helps shooters achieve a more secure grip on the small P290 frame, especially for users with larger hands or when firing higher round counts at the range.
Dimensions, Weight, and Form Factor
While exact measurements can vary slightly, retailers list approximate physical characteristics:
The magazine’s single-stack, extended-length design is intended to balance increased capacity with manageable concealment and handling on a subcompact pistol platform.
Reliability, Maintenance, and Warranty
ProMag highlights durability and reliability features built into the SIG 19 magazine:
For best performance, ProMag and retailers recommend:
Periodic disassembly and cleaning to remove carbon, dirt, or lint.
Using appropriate 9mm ammunition within P290 specifications.
Inspecting feed lips and springs regularly and replacing the magazine if damage or excessive wear is observed.
Typical Use Cases
The ProMag Steel Handgun Magazine for Sig Sauer P290 9mm, 10-Round Blued (SIG 19 / SIG19) is suited for:
Concealed carry backups: Extra 10-round magazine carried on-body or in a bag for self-defense setups (where legal).
Range training and practice: Additional magazines to reduce downtime between strings of fire.
Home-defense configurations: Higher on-board capacity than flush-fit magazines while remaining compact.
As with all firearm accessories, users should follow all applicable laws and ensure safe handling, loading, and unloading procedures.
Technical Identification and Catalog Data
For cataloging, inventory, and SEO-optimized product pages, the magazine can be identified with the following standardized details:
These details support accurate search matches for terms like “ProMag SIG 19 P290 10 round blue steel magazine,” “SIG19 9mm P290 mag,” or by the UPC 708279013300.
The End
