​The barrel length of a Category H weapon (handgun) is established by measuring the distance from the muzzle to:

  • For a revolver - the breech end immediately in front of the cylinder
  • For any other Category H weapon:
    • if the weapon has a breech bolt, the breech face with the breech bolt in the closed position
    • if the weapon has a top slide, the breech face with the top slide forward; or
    • if the weapon does not have a breech bolt or top slide the breech face with the break action closed.