Court of Appeals for the Seventh Circuit October 25, 2001, 01-2097 (United States v. John W. Rogers)

EASTERBROOK, Circuit Judge.

Federal agents found in John Rogers’s garage a home-made silencer for a MAC-11 semiautomatic pistol. He has been convicted of possessing a “firearm” (the silencer, see 18 U.S.C. § 921 and 26 U.S.C. § 5845(a)(7)) not registered to him in the National Firearms Registration and Transfer Record. Every “firearm” (a term of art, see

Staples v. United States,

511 U.S.