Whether the district court erred in applying a four-level enhancement under the U.S. Sentencing Guidelines for 'altered or obliterated' serial number, where the serial number was 'visible to the naked eye' and required no crime lab procedure to read the serial number

QUESTION PRESENTED FOR REVIEW I Whether the district court erred in applying a four-level enhancement under the U.S. Sentencing Guidelines for “altered or obliterated” serial number, where the serial number was “visible to the naked eye” and required no crime lab procedure to read the serial number. i