Not allowed here in CT.
Sec. 53-202.
(c) Any person who possesses or uses a machine gun for an offensive or aggressive purpose shall be fined not more than one thousand dollars or imprisoned not less than five years nor more than ten years or be both fined and imprisoned.
(d) The possession or use of a machine gun shall be presumed to be for an offensive or aggressive purpose: (1) When the machine gun is on premises not owned or rented, for bona fide permanent residence or business occupancy, by the person in whose possession the machine gun was found; or (2) when in the possession of, or used by, an unnaturalized foreign-born person, or a person who has been convicted of a crime of violence in any state or federal court of record of the United States of America, its territories or insular possessions; or (3) when the machine gun is of the kind described in subsection (g) hereof and has not been registered as therein required; or (4) when empty or loaded projectiles of any caliber which have been or are susceptible of use in the machine gun are found in the immediate vicinity thereof.
We still have a version of the Fed AW on the books so a AR or AK pistol can't be carried as well.
Sec. 53-202f. Transportation of assault weapon. Authorized actions of gun dealer. (a) While transporting an assault weapon between any of the places mentioned in subdivisions (1) to (6), inclusive, of subsection (d) of section 53-202d, no person shall carry a loaded assault weapon concealed from public view or knowingly have, in any motor vehicle owned, operated or occupied by him (1) a loaded assault weapon, or (2) an unloaded assault weapon unless such weapon is kept in the trunk of such vehicle or in a case or other container which is inaccessible to the operator of or any passenger in such vehicle. Any person who violates the provisions of this subsection shall be fined not more than five hundred dollars or imprisoned not more than three years or both.
Unable to find anything about AOW's or "short" rifles or shotguns.
Still not a good idea ,even if legal in your state, IMHO.