Silencer Craft DC?

[iwatt]

What Craft (Mech) DC would you give a player attempting to build a Silencer for his Handgun. I´m asking because in Tom Clancy´s book "Without Remorse", John Clark (the main character) build´s a jury rigged silencer, as well as some other cool stuff.

I´m considering having these built silencer have a limit of about 10 shots before failing.


Thanks