You don't need to destroy them to make them ineffective. Just find a way to produce a high number of false positives legally. Or hell, get 10 mates to fire some shots in 10 different locations while you make your hit.
what do you mean? I know how silencer (sound suppressor) works and I know (and was shooting) a gun which doesn't require a suppressor. The latter one makes no noise AT ALL, except for the mechanics.
