The ProMag RUG04 is a 10-round extended magazine built for Ruger P90 and P97 pistols in .45 ACP. If you run either of these powerhouse handguns—whether for home defense, the range, or duty carry—this magazine gives you more rounds on tap without the bulk of a full-size frame gun. ProMag engineered this with heat-treated chrome silicon wire springs and a rigorous assembly process to deliver reliable feeding and consistent performance, shot after shot.

Built in the USA, this blued-finish magazine combines rugged construction with straightforward functionality. The extended capacity means fewer reloads during practice sessions or when you need it most, while the standard blued steel finish matches the classic Ruger platform aesthetic. Every unit is checked throughout assembly to ensure it meets the same standard every time.

ProMag backs every magazine with a lifetime guarantee against manufacturer's defects—a solid commitment to stand behind their work. Whether you're stocking spares for the range, building out your defensive loadout, or just want extra capacity on hand, the RUG04 is a dependable choice for .45 ACP shooters who trust their Rugers.

Key Features

• 10-round capacity for Ruger P90 and P97 .45 ACP pistols
• Heat-treated chrome silicon wire springs for reliable feeding
• Manufactured and assembled in the USA
• Rugged construction designed for consistent performance
• Blued finish
• Lifetime manufacturer's defect guarantee

Specifications

Frequently Asked Questions

What Ruger pistols is this magazine compatible with?

The ProMag RUG04 is designed for Ruger P90 and P97 pistols chambered in .45 ACP.

How many rounds does it hold?

This extended magazine holds 10 rounds of .45 ACP ammunition.

Is this magazine made in the USA?

Yes. ProMag manufactures and assembles this magazine in the USA using heat-treated chrome silicon wire springs.

What warranty comes with this magazine?

ProMag includes a lifetime guarantee against manufacturer's defects with every magazine.