D.C. police have begun accepting applications from residents who want to register revolvers. Some basics: The Guns - As a rule, the city will accept registration applications only for revolvers, although relatively rare types of semiautomatic handguns are permitted. Most clip-loaded semiautomatic weapons remain banned. - Residents who illegally kept revolvers in their homes during the ban will be allowed to apply for registrations during a six-month amnesty period... (GunPolicy.org)