Please provide legal reference for your legal claim. There is no definition or procedure for measuring overall length in the Criminal Code, the Firearms act, or Regulations Prescribing Regulations Prescribing Certain Firearms and Other Weapons, Components and Parts of Weapons, Accessories, Cartridge Magazines, Ammunition and Projectiles as Prohibited or Restricted. If a term is not defined, the legal standard is either expected to be common knowledge or found in a common dictionary. The dictionary definition of "overall length" varies, but is generally understood to be "from the forward-most projection to there rearmost projection".