Walther Q4

The Walther Q4 SF is a semi-automatic pistol produced by German weapons manufacturer Carl Walther GmbH since 2020.[1][2]

The pistol's frame is cut from a single piece of steel.[3] The pistol weighs about 40 oz (1,100 g), which is heavier than Walther pistols which have polymer, or plastic, frames.[4][5] The pistol is more stable and produces less recoil than Walther's polymer-framed nine millimeter pistols.[6] Walther introduced the Q4 SF in 2020, after the success of a larger-format pistol, the Walther Q5 SF, another steel pistol.[2] Because of its smaller size, the Walther Q4 SF is designed for self-defense, and is a pistol that can be carried; in contrast to the Q5 SF, which is larger and is primarily a marksmanship pistol.[2][1]

The pistol fires 9 mm cartridges, or bullets, which are similar to the American .40 caliber.[1][7]

The Walther Q4 SF borrows characteristics also from another Walther pistol, the Walther PPQ, a polymer, or plastic-framed, pistol.[8] Both pistols are single-action.[2] The trigger on a single-action pistol releases the cocked hammer, striker, or firing pin, and performs no other mechanical function.[9] The Walther Q4 SF uses a striker, which is a spring-loaded firing pin, rather than a hammer.[1] The combination of a striker-fired, single-action pistol allowed Walther to adjust the trigger pull based on the perceived shooter's requirements and not the pistol's mechanical needs.[8][10] A slow, steady, even trigger pull aids in accuracy.[1]

The pistol comes with high visibility sights, which are designed for quick target acquisition and low light.[11][2] The Q4 SF comes with magazines that hold 15 bullets (nine millimeter cartridges).[1]