BARREL CONVERSION FOR A GUN

摘要

A barrel conversion for a gun comprises; an external, peripheral surface suitably configured to fit and cycle the gun whose barrel (l') is to be converted and a stepped internal bore. The stepped internal bore comprises a first, rifled portion (4') of a first internal diameter extending from the chamber of the gun, and a second, clearance portion (3') of a second internal diameter, the clearance portion (3') extending from the rifled portion (4') to the exit of the barrel (1'), and the second internal diameter being larger than the first internal diameter.