EI BERSA MAG THUNDER 40 40SW 10RD

The EI Bersa Thunder 40 .40SW 10-round magazine is a factory OEM magazine built for the Bersa Thunder 40 UC platform. If you carry or train with a Thunder 40, having reliable spare magazines on hand is non-negotiable—whether you're at the range, in the field, or counting on your sidearm for personal defense. This 10-round magazine delivers the capacity you need in a compact, trusted package designed to work seamlessly with your pistol.

Magazine reliability often gets overlooked until it matters most. A quality mag with proper feed lips, reliable springs, and durable construction is just as important as the gun itself. This factory Bersa magazine is engineered to the same standards as the one that shipped with your Thunder 40, so you know the fit, function, and reliability will match your expectations.

Having multiple magazines extends your range sessions, keeps you topped up for carry rotation, and gives you a backup if a mag needs cleaning or maintenance. Spare mags are one of the smartest investments a handgun owner can make—inexpensive insurance that you'll always have ammunition at the ready. For Thunder 40 UC owners, original-equipment magazines eliminate any guesswork about compatibility.

Key Features

• Factory OEM magazine for Bersa Thunder 40 UC
• 10-round capacity
• .40 S&W chambering
• Reliable feed and retention

Specifications

Frequently Asked Questions

Will this magazine work with my Bersa Thunder 40 UC?

Yes. This is the factory OEM magazine designed for the Bersa Thunder 40 UC platform, so it will fit and function reliably in that pistol.

What capacity does this magazine hold?

This magazine holds 10 rounds of .40 S&W ammunition.

Why should I buy spare magazines?

Spare magazines let you maximize range time without delays, rotate mags during carry to reduce spring compression, and ensure you always have backup ammunition available. They're one of the most cost-effective accessories you can own.