Operating mechanism The Walther PPQ is a
short recoil-operated locked breech
semi-automatic pistol that uses a modified
Browning cam-lock system adapted from the
Hi-Power pistol. The PPQ has a glassfiber-reinforced polymer frame and steel slide assembly. It can be broken down into its main parts or field stripped with a take down catch without the need for tools.
Features The internal preset
striker 'Quick Defense'
trigger of the PPQ is a departure from previous Walther pistols and has been developed for the PPQ. When the trigger is pulled, the
trigger bar engages a disconnect lever, which props up a sear hook, which releases the fully pre-loaded striker assembly, firing the pistol. Pulling the trigger does not partially load the striker spring as with the
Glock and many other striker fired pistol designs. The PPQ trigger pull is entirely due to the trigger and disconnector springs. The PPQ has a trigger travel of approximately with a relatively short trigger reset of and a trigger pull of approximately . Unlike many other trigger systems, preset internal strikers have a let-off point and trigger pull that remains unchanged from the first shot to the last and requires no decocker. The striker of the PPQ variant does not protrude from the back of the slide, as the firearm is in a constant cocked state. Due to its trigger characteristics, the PPQ pistol is marketed by Walther in Germany as a special forces pistol and not as a police duty pistol. The Technical Specifications (TR) of the German Police (Technische Richtlinie Pistolen im Kaliber 9mm x 19, Revision January 2008) for obtaining a
German Police duty pistol certification require a first shot trigger pull of ≥, a trigger travel of ≥ and a trigger reset of ≥. Ergonomics and fully ambidextrous controls were a key focus in the design of the firearm, and as a result, three interchangeable grip backstraps are included (small, medium and large) to accommodate various hand shapes and sizes; this feature permits most shooters a comfortable and efficient grip on the firearm. The Tenifer process produces a matte gray-colored, non-glare surface with a 64
Rockwell C hardness rating and a 99% resistance to
salt water corrosion (which meets or exceeds
stainless steel specifications), making the PPQ particularly suitable for individuals carrying the pistol
concealed as the highly chloride-resistant finish allows the pistol to better endure the effects of perspiration.
Safety The PPQ features three internal
safeties (trigger safety, firing pin safety and disconnector safety) of which the external
integrated trigger safety inner lever mechanism contained within the trigger serves as an additional passive drop safety. The pistol has a
loaded chamber indicator in the form of an extractor on the right side of the slide that gets recessed in the slide when a cartridge is present in the chamber. When the extractor is recessed a red coloured indicator at the end of the extractor also becomes visible.
Feeding The PPQ feeds from staggered-column or double stack
magazines of varying capacity. Walther also offers staggered-column magazines with a +2 baseplate that add 2 rounds to the magazine capacity at the expense of extending the grip and the pistol height by approximately . For jurisdictions which restrict magazine capacity to 10 rounds, Walther offers single stack 10-round magazines. The magazines are made of steel for Walther by the Italian subcontractor MEC-GAR and have an anti friction coating for easy loading and anti-corrosion and witness holes to view how many rounds are in the magazine. A steel spring drives an orange coloured plastic follower. The standard staggered-column PPQ magazines weigh After the last cartridge has been fired, the magazine follower exerts upward pressure on the slide stop causing it to engage the slide stop notch thereby holding it in the "open" position. The slide stop release levers are located on the left and right sides of the frame directly beneath the slide and can be manipulated by the thumb of the shooting hand. When a cartridge is present in the chamber the pistol can be fired without the need of having a magazine inserted in the weapon. Empty magazines are released by depressing ambidextrous magazine release levers incorporated into the
trigger guard in all non M2 PPQ variants or by depressing a reversible thumb release push-button located behind the bottom of the trigger guard in the PPQ M2 variant. Additionally, the PPQ M2 magazines are not compatible with the original PPQ magazines.
Sights The standard
iron sights are made of steel or polymer depending on the country in which the pistol is sold. The rear sighting element is adjustable for
windage by a screw and the front sighting element can be adjusted for
elevation by exchanging the front sight. For this Walther offers front sight elements in four differing heights and rear sight elements in two differing heights. The standard sights have 3 high-contrast dots which serve as
contrast enhancements and have been painted with afterglow paint to aid target acquisition under unfavourable lighting conditions.
Tritium illuminated night sights are also available. Due to product evolution in the Walther pistol line the PPQ maintains compatibility with Walther P99 and
Walther PPS sights. The sight radius is for the PPQ 9×19mm Parabellum models and for the PPQ .40 S&W models.
Overpressure ammunition According to Walther "Plus-P" (+P)
overpressure ammunition may affect the wear characteristics of the PPQ pistol or exceed the margin of safety. Use of "Plus-P" ammunition may, according to Walther, result in the need for more frequent service. Walther recommends against the use of
"Plus-P-Plus" (+P+) overpressure ammunition in Walther firearms. This marking on the ammunition designates that it exceeds established industry standards, but the designation does not represent defined pressure limits and therefore such ammunition may vary significantly as to the pressures generated.
Accessories at the C.I.P. accredited Beschussamt Ulm (Proof House Ulm) Factory accessories include: fixed metal 3-dot iron sights, fixed
tritium night sights, adjustable sports iron sights, adjustable optic fibre iron sights,
laser pointers,
tactical lights, magazine flashlight adapters, holsters, magazines, magazine loaders, grip extenders and a
suppressor kit with a barrel, protective cap for the muzzle threads and a sound suppressor of the Impuls II-A product line made by
Brügger & Thomet are offered as factory accessories. For the recording of weapon specific data, a
passive RFID transponder may be integrated into the backstrap of the pistol. The stored data can be read via an external unit. ==Variants==