Tishina

The BS-1 "Tishina" is a 30mm grenade launcher featured in Call of Duty: Black Ops. It is the grenade launcher for the AK-74u, and is similar to the GP-25 in the fact that it is muzzle-loaded.

Tactics
Tactics remain the same with other grenade launchers, as the BS-1 does the same damage as other grenade launchers. The main difference is that the BS-1 is attached to a SMG, which has different applications to assault rifles the other grenade launchers are mounted to.

Trivia

 * Although the grenade that is loaded in is noticeably smaller than the 40mm grenades the M203 and GP-25 use, the BS-1 does the same damage as them.