Walther Polizeipistole Kriminalmodell
from Girls' Frontline
Origin
Germany (Weimar Republic)
The Walther PP (Polizeipistole, or police pistol) series pistols are blowback-operated semi-automatic pistols, developed by the German arms manufacturer Walther The PPK (Polizeipistole Kriminalmodell, or Police Pistol Detective Model) is the most common variant of the PP. It features a shorter grip, barrel, frame and reduced magazine capacity. A new, two-piece wrap-around grip panel construction was used to conceal the exposed back strap. The smaller size made it more concealable than the original PP and hence better suited to plainclothes or undercover work.

Girls' Frontline
Girls' Frontline is a mobile strategy game developed by MICA Team, a Chinese company. It is a moe anthropomorphism game in which the player controls echelons of characters, each of which are based on actual guns. The game was released in Mainland China on 20 May 2016, and in Hong Kong and Taiwan on 18 January 2017. It was also released in South Korea on 30 June 2017. The English version published by SUNBORN Network Technology was released on May 8, 2018. This game is a prequel of another game developed by the same company called Bakery Girls.