The SP22 is a modular semi-automatic pistol manufactured by Walther Sportwaffen and distributed by Smith & Wesson.

It is manufactured with a composite receiver, aluminum housing, and all-steel internal components.

[citation needed] The M2 model features a longer, 6-inch (15 cm) barrel for increased velocity and accuracy.

[citation needed] The M3 model features a 6-inch (15 cm) match-grade barrel along with an adjustable match trigger.

[citation needed] The M4 model retains the same standard features that are found on the M3, but includes a contoured adjustable wooden grip with hand support, and lacks the Picatinny-style rails.