United States v. Thompson-Center Arms Co.

United States v. Thompson-Center Arms Company, 504 U.S. 505 (1992), was a case decided by the Supreme Court of the United States.

Background
The legal dispute in United States v. Thompson-Center Arms Company arose when officials from the U.S. Bureau of Alcohol, Tobacco, and Firearms contacted Thompson Center Arms informing them that the kit of the Contender Pistol that included a stock and a 16 in barrel constituted a short-barreled rifle under the National Firearms Act.

Arguments
The U.S. Government's argument centered on the analogy of a disassembled bicycle still being a bicycle.

Stephen Halbrook argued on behalf of Thompson Center Arms and stated that the weapon would have to be assembled with both the stock and the 10 in barrel attached for it to be a short-barreled rifle.

Decision
The court ruled in Thompson Center Arms' favor in that the carbine conversion kit did not constitute a short-barreled rifle, primarily because the kit contained both the stock and the 16-inch barrel.

Justice Scalia also noted that there is a warning carved on the stock telling the user to not attach the stock to the receiver when the 10-inch barrel is attached to the receiver or vice versa.

This circumstance caused the court to apply the rule of lenity since the NFA carries criminal penalties with it. This meant that ambiguous statutes are interpreted against the government.