AWC, a silencer manufacture had a nice map of where it is currently legal to own.
Silencers are legal for civilian ownership in the following states Alabama, Alaska, Arizona, Arkansas, Colorado, Connecticut, Florida, Georgia, Idaho, Indiana, Kansas, Kentucky, Louisiana, Maine, Maryland, Mississippi, Missouri (C&R Required), Montana, Nebraska, Nevada, New Hampshire, New Mexico, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, South Carolina, South Dakota, Tennessee, Texas, Utah, Virginia, Washington, West Virginia, Wisconsin and Wyoming.
Popular VideoYou have to see this to believe it. This dog unlocked his crate and four doors in the middle of the night to escape his veterinarian's office:
Civilian ownership is prohibited in the District of Columbia and the following states: California, Delaware, Hawaii, Illinois, Iowa, Massachusetts, Michigan, Minnesota, New Jersey, New York, Rhode Island and Vermont.