Adding silencers with Nightmare mod

Greetings,

I really love the nightmare mod, love the difficulty changes, but what bothers me is that silencers are not available for most weapons.
Is there a version of the nightmare mod where the silencers work like in the original hardcore mod, like for the dragunov.
I know how to mod FC4, so if there is no download than I can change it myself if someone can tell me how to

Thanks in advance