Identifying & Modifying Weapons

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How to Measure Category H Barrel Lengths

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; or

- For any other category H weapon

If the weapon has a breech bolt, the breech face with the breech bolt in the closed position; or
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.

Last Updated: 09/12/2008