Grip panels are one of three kinds of wood, Hogue G-10 Extreme composite, or rubber wrap-around in the "Sport" model.

The frame for all P938 models is anodized aluminum alloy, and the slide is stainless steel either bare or with SIG's Nitron coating.

The safety is ambidextrous, while the magazine release is only on the left side.

Specialty versions have been made such as the Scorpion, Nightmare, Extreme, Equinox, AG (aluminum grip), and SAS (SIG Anti-Snag) as well as for the Legion series.

[4] The P938-22 variant is chambered for .22 Long Rifle and features a 10-round magazine, alloy slide, and black hard coat finish.