Section 17270.
Cal. Penal Code - PEN § 17270.
in effectAs used in this part, an “unconventional pistol” means a firearm with both of the following characteristics:
(a)
It does not have a rifled bore.
(b)
It has a barrel or barrels of less than 18 inches in length or has an overall length of less than 26 inches.
Source: CA Legislative Counsel Bulk DataURL: https://downloads.leginfo.legislature.ca.gov/pubinfo_2025.zipFetched: 6/27/2026