In my upcoming review, I take a close look at XS Sights’ move beyond sighting systems and into magazine-capacity upgrades with its +3 and +5 magazine extensions. Known for practical firearm enhancements such as tritium night sights, express sights, fiber-optic sights, and optic plates, the Fort Worth, Texas-based company is applying the same performance-minded approach to a component many shooters rely on every time they train, compete, or spend time on the range: the magazine.

The review focuses on the XS Sights +3 Magazine Extension for the Walther PDP while also noting the company’s broader +3 and +5 offerings, including compatibility with select Walther PDP and Smith & Wesson M&P magazines. Readers can expect a practical evaluation of what added capacity means in real use, how the extension affects handling and reloads, and why details such as aircraft-grade aluminum construction, black nitride finish, factory spring compatibility, and tool-free installation matter when upgrading a magazine.

Rather than treating the extension as a cosmetic accessory, the review examines it as a functional upgrade: one intended to add rounds, improve purchase during reloads, withstand regular use, and remain straightforward to maintain. I will also address the tradeoffs that come with added length, including concealment, magazine-carrier fit, balance, and the need to verify reliability and legal compliance before relying on any capacity-enhancing component.