What needs to be understood is that silencers are 1-Costly and 2-Not Absolutely Silent. While the argument can be made that deregulating silencers at the federal level will lead to more of their use in crimes (it's logical, they will be more available), those will not particularly impede the ability to "track down" or detect a shooter. Rather, silencers only provide a moderate sound reduction that would only provide a notable benefit to individuals who shoot often, namely enthusaists, hunters, and competition shooters. Thus, deregulation will benefit citizens without impeding justice or protection of those citizens. Yes, they should be deregulated.