- "Top break, over-under double-barrel shotgun. Long-range and in tactical configuration."
— In-game description
Unlike other shotguns, the BOSG.12.2 fires a single slug instead of a spread of individual pellets, giving it a much longer range and higher damage with a single shell. Also unlike other shotguns, headshots are enabled for the BOSG.12.2.
The high damage output of the BOSG.12.2 makes it possible to kill or take down a light or medium-armored enemy with one single shot at close range. It is possible to fire two shots in quick succession with the BOSG.12.2 to take care of more heavily-armored enemies, but the high recoil demands a quick downward "whip" to compensate.
The BOSG.12.2 has a destruction ability similar to that of Glaz's OTs-03. It can break a hatch in three shots. Like the OTs-03 and unlike other shotguns, it cannot destroy wooden "beams" in double-layered walls.
- The BOSG.12.2 does not count towards any shotgun challenges in the Weekly Challenge System, only the rifle challenges.
- At one point on the Technical Test Server, the BOSG.12.2 was able to create holes on the windows on Presidential Plane. However, this was removed for unknown reasons.