Mk 22 Mod 0

The Smith and Wesson Model 39 "Hush Puppy" is a silenced handgun featured in Call of Duty: Black Ops (Nintendo DS).

Call of Duty: Black Ops DS
The Hush Puppy appears in three screenshots of Black Ops DS. Nothing else is known at this time.

Trivia

 * The Hush Puppy will be the first silenced handgun to be featured in a DS Call of Duty.