Division 5

In the case of devices with a barrel not exceeding 30 centimetres or whose overall length does not exceed 60 centimetres, the device incorporates irremovable barriers along the full length of the barrel such that a shot, bullet or projectile is not able to pass through the barrel by the action of a combustible propellant, and such that any free space left at the muzzle is no more than 1 cm in length.