# The Firearms (Dangerous Air Weapons) Rules 1969, Article 2


(1) Subject to paragraph (2) below, Rule 3 of these Rules applies to an air weapon (that is to say, an air rifle, air gun or air pistol) capable of discharging a missile so that the missile has, on being discharged from the muzzle of the weapon, kinetic energy in excess, in the case of an air pistol, of 6 ft. lb. or, in the case of an air weapon other than an air pistol, of 12 ft. lb.
(2) Rule 3 of these Rules does not apply to a weapon designed for use only when submerged in water.

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Source: https://www.legislation.gov.uk/uksi/1969/47/article/2 (the official version)
Page: https://openlegislation.uk/firearms-dangerous-air-weapons-rules-1969/article-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.