Okla. Stat. tit. 21, § 21-1289.18

DEFINITIONS

A. "Sawed-off shotgun" shall mean any firearm capable of

discharging a series of projectiles of any material which may

reasonably be expected to be able to cause lethal injury, with a

barrel or barrels less than eighteen (18) inches in length, and

using a combustible propellant charge, but does not include any

weapon so designed with a barrel less than eighteen (18) inches in

length, provided it has an overall length of twenty-six (26) inches

or more.

B. "Sawed-off rifle" shall mean any rifle having a barrel or

barrels of less than sixteen (16) inches in length or any weapon

made from a rifle (whether by alteration, modification, or

otherwise) if such a weapon as modified has an overall length of

less than twenty-six (26) inches in length, including the stock

portion.

C. Every person who knowingly has in his possession or under

his immediate control a sawed-off shotgun or a sawed-off rifle,

whether concealed or not, shall upon conviction be guilty of a Class

D2 felony offense for the possession of such device, and shall be

punishable by a fine not to exceed One Thousand Dollars ($1,000.00),

or imprisonment as provided for in subsections B through F of

Section 20O of this title, or both such fine and imprisonment.

D. This section shall not apply to any firearm that is lawfully

possessed under federal law or that is otherwise not regulated as a

"firearm" pursuant to the National Firearms Act.

E. The term "firearm" as used in this section and in the

Oklahoma Firearms Act of 1971, shall not include an "antique

firearm" as defined in 18 U.S.C., Section 921 (2006).