Section 27: Shortening smooth-bore firearms prohibited.

No person shall shorten the barrel of a smooth-bore firearm to a length of less than twenty inches from the muzzle to the point at which the charge is exploded on firing, and no person shall have in his possession or under his control any smooth-bore firearm which has been so shortened, or manufacture a smooth-bore firearm having such a barrel of less than twenty inches or have in his possession or under his control any firearms manufactured in contravention of this section.