The OTs-14 Groza (ОЦ-14 "Гроза") is a Russian selective fire bullpup assault rifle chambered for the 9x39mm subsonic round. It was developed in the 1990s at the TsKIB SOO (Central Design and Research Bureau of Sporting and Hunting Arms) in Tula, Russia. The weapon is also colloquially known as OC-14 or OTs-14 "Groza" ("Thunderstorm"). The OTs-14-4A "Groza-4" has one derivative, the TKB-0239 (ТКБ-0239), also known as OTs-14-1A "Groza-1", chambered for the 7.62x39mm round.
- OTs-14 (OC-14) is an assault rifle, but it is classified as an SMG in-game.
- OC-14 is Tier 2 and no longer available
- OC-14-H is the new modmaster Tier IX (9) Sub Machinegun.