A short-barreled rifle or SBR is legally defined as a “shoulder-fired, rifled bore” firearm with a barrel shorter than 16 inches or a firearm that has an overall length of fewer than 26 inches. An SBR is considered a Title 2 restrictedfirearm. It falls under the 1968 Gun Control Act ...
The short barreled rifle permit and the suppressor permit are firearms permits required by federal law. The SBR permit is required to alter any rifle so that has a barrel less than 16 inches long or an overall length of less than 26 inches. The suppressor permit -- often called a silencer...