Updated 04-May-2020.
Mondo shtuff from around the internet, all about WALTHER PPQ!
My botty best at summarizing from Wikipedia: the Walther PPQ is a semi-automatic pistol developed by the german company Carl Walther GmbH Sportwaffen of Ulm for law enforcement, security forces and the civilian shooting market . it shares its engineering principles and main innovation of the PPQ over the P99QA, P99 RAD and P99Q is its ‘Quick Defense’ trigger . it can be broken down into its main parts or field stripped with a take down the PPQ has a trigger travel of approximately 9 mm (0.4 in) with a relatively short trigger reset of 2.5 mm . the striker does not protrude from the back of the slide, as the firearm the injection molded grip frame contains four steel guide rails for the slide: two at the rear of the frame, and the remaining pair above the front of the trigger guard . the polymer grip has a texturized ‘ PPQ pistols delivered in polymer pistol case containing pistol, backstraps and magazines . barrels deviate from the other models having polygonal rifling instead . as of 2016 the PP 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 standard staggered-column PPQ magazines weigh 80 g (2.8 oz) slide stop release levers are located on the left and right sides of the frame directly beneath the slide . when a cartridge is the rear sighting element is adjustable for windage by a screw and the front sight element can be adjusted for elevation . for this Walther offers front sight elements in four differing heights . the standard sights have 3 high- the sight radius is 156 mm (6.1 in) for the PPQ 919mm Parabellum models . it is 158 mm (6.2 in) in the .40 S&W models. Walt a non-standard hole in the striker channel ensures sufficient water displacement if the weapon becomes completely flooded with water . Hydraulic resistance is offset by means of a stronger striker spring . special guides reduce the the PPQ First Edition is a variant marketed in the united states . pistols have a 118 mm (4.6 in) long special barrel with a threaded muzzle for mounting a suppressor the PPQ M2 Navy SD is a 919mm Parabellum variant . a non-standard hole in the striker channel ensures sufficient water displacement if the weapon becomes completely flooded with water . pistols are delivered with a standard staggered-column magazine and a second magazine that add 2 rounds to the magazine capacity . the PPQ M2 5″ Sport was introduced in 2014 and is a the pistol has been enlarged to accommodate .45 ACP cartridges, also resulting in a heavier pistol . Unlike the PPQ 919mm Parabellum and .40 S&W chambered the PPQ Red Gun is a pistol identical in design and operation to the actual service weapons . all functional elements, dimensions, weights and trigger characteristics are the same . the testing/bidding process included Glock 19, During bidding phase, Walther won the government contract to deliver 49,600 PPQ M2 in 5 years.