Firearms – Barrels – Auxiliary
Patent
1989-05-11
1990-04-03
Brown, David H.
Firearms
Barrels
Auxiliary
42 51, F41C 2122
Patent
active
049128680
ABSTRACT:
A conversion unit for a firearm including a barrel assembly which replaces a standard shotgun barrel used on the type of shotguns that utilize quick change barrels which enables an existing shotgun to be converted into a muzzle loading rifle. The conversion is accomplished without affecting normal operation of the shotgun thereby enabling the muzzle loading conversion unit of this invention to be removed and replaced by the previously removed shotgun barrel. The muzzle loading conversion unit includes a barrel that has the same general outside dimensions as the standard replacement shotgun barrel with the conversion barrel including rifling and adjustable sights with the breech end being provided with a plug that is chambered to accept a standard shotshell primer with the breech plug also having a spring loaded extractor which will extract the spent shotshell primer a short distance. The underside of the conversion barrel is provided with two lugs that are drilled to accept a ramrod in alignment with the existing magazine cap which is modified by providing a passageway receiving the ramrod which passes through the magazine cap, the magazine tube and is secured to a threaded stud affixed to the inside of the magazine follower.
REFERENCES:
patent: 230224 (1880-07-01), Beebe
patent: 685751 (1901-11-01), Edge
patent: 990575 (1911-04-01), Marble
patent: 1661949 (1928-03-01), Krenek
patent: 3780464 (1973-12-01), Anderson
patent: 4232468 (1980-11-01), Chapin
patent: 4519156 (1985-05-01), Shaw
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