Origin
Russia
PP-19 Bizon (Bison) is a Russian lightweight selective fire submachine gun designed in 1993 by Izhmash. Design team was lead by Victor Kalashnikov, son of the famous Mikhail Kalashnikov, youngest son of Evgeny Dragunov, Alexei Dragunov was also part of the development team. Bizon's development was a request from Ministry of Internal Affairs (MVD), with the uprising conflicts around Dagestan and Chechen regions, the Federal Security Service (FSB) needed a weapon capable of fast and accurate firing at close quarter range for their counter terrorism campaign. Straight blowback operated, Bizon have many variants designed to chamber 9x18mm Makarov, 9x19mm Parabellum, .380 ACP and the 7.62x25mm Tokarev, primary production variant is chambered for 9x18mm Makarov though. The wide range of calibre boosted the product's commercial appear and demonstrated the weapon's versatility. Bizon as a SMG had undergone continuous modifications during it's production life, original Bizon was retroactively designated Bizon-1, the production variant is dubbed as Bizon-2. Bizon is able to achieve various rate of fire with different cartridges all in between 650 to 700 rounds per minute.

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.