Origin
United States
The Browning M1919 machine gun is a .30 caliber Medium Machine Gun (MMG), chambered to utilize .30-06 Springfield rounds. It was belt-fed, with a normal belt containing 75 rounds; it also used a pistol-esque grip and odd, yet functional iron sights. Altogether, it weighed 31lbs. The gun began production in 1919 (hence M1919), it was the resulting solution for a more portable machine gun than the M1917 whilst still being able to lay down heavy fire on enemies. When the 7.62x51mm NATO cartridge began to phase out the .30-06 cartridge, the newer M1919s were chambered to utilize the newer rounds. It saw more prominent use in World War II, and it was mounted on river craft in the Vietnam War, during the 1960's and '70's. Although it is now phased out due to the arrival of the lighter M60 7.62x51mm NATO general purpose machine gun and the FN M249 SAW 5.56x45mm NATO light machine gun.

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.