The S12K in BattleGrounds is modeled after the Saiga-12K which is a semi-automatic 12-gauge shotgun that is magazine fed. While there are some versions in its real life counterpart that use 20-gauge and .410 instead of 12-gauge rounds, the in-game model uses the 12-gauge version. What the S12K lacks in range, it makes up in sheer volume. The S12K is a devastating weapon at close range while its semi-automatic mechanism makes killing multiple enemies easier than with its pump-action or double-barrel counterparts. The weapon also has an advantage over other shotguns in its reloading time due to being magazine-fed.