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Class Information
Number: 42/77
Name: Firearms > Barrels > Auxiliary
Description: Barrels some of which are adapted to be placed within the usual barrel to make a rifle in place of a shotgun or for some other reason to reduce the usual bore; some barrels adapted to be placed by and removed from the side of the usual barrel to make a double-barreled gun or one with a shot and also a rifle barrel.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8701325 Duplex weapon system Apr. 22, 2014
8701326 Pistol barrel system and method Apr. 22, 2014
8584391 Tactical telescoping shotgun Nov. 19, 2013
8341863 Barrel holder for a drop-down barrel weapon Jan. 1, 2013
8296989 Adapter extension for rifle fired muzzle mounted grenades Oct. 30, 2012
8250962 Bullet velocity enhancing rifle attachment assembly Aug. 28, 2012
8161886 Short magnum shotshell cartridge and firing assembly Apr. 24, 2012
8104394 Flash suppressor apparatus and methods Jan. 31, 2012
8099896 Rifle having a replaceable barrel Jan. 24, 2012
7987624 Flashless electric firearm and ammunition therefor Aug. 2, 2011
7966760 Modular gunstock Jun. 28, 2011
7870815 Gun flash hider Jan. 18, 2011
7797872 Clamp for retail display of extra firearm barrel Sep. 21, 2010
7753679 Non-firing training rifle Jul. 13, 2010
7735409 Conversion kit and method for a RUGER.RTM. 10/22.RTM. semi-automatic .22 caliber rim fire gun to shoot .17 mach 2 cartridges Jun. 15, 2010
7658186 Multi-purposes mechanism for shooting apparatus Feb. 9, 2010
7658138 Practice barrels for use with practice cartridges Feb. 9, 2010
7631453 Interchangeable caliber semi-automatic rifle Dec. 15, 2009
7562478 Firearm conversion system and caliber reducer with hammer safety lock Jul. 21, 2009
7467490 Display clamp assembly for extra firearm barrels Dec. 23, 2008
7444775 Caliber convertible AR-15 upper receiver system Nov. 4, 2008
7421934 Mortar tube for training Sep. 9, 2008
7380488 Blank firing adapter for combination gas and recoil operated weapon Jun. 3, 2008
7380363 Replaceable blank firing barrel Jun. 3, 2008
7316093 Firearm and munitions kit Jan. 8, 2008
7302774 Flash suppressor apparatus and methods Dec. 4, 2007
7302881 Conversion kit and method for a ruger 10/22 semi-automatic .22 caliber rim fire rifle to shoot .17 mach 2 cartridges Dec. 4, 2007
7207273 Buckshot round Apr. 24, 2007
7121035 Sight-preserving, partially self-cleaning, divergent-axis caliber conversion in handguns Oct. 17, 2006
7076904 Detachable gun barrel assembly Jul. 18, 2006
7062875 Barrel replacement or insert devices for firearm function conversion Jun. 20, 2006
7036260 Method and system to prevent firing live rounds of ammunition during miles exercises May. 2, 2006
6874403 Assembly and a method for increasing the accuracy of a projectile Apr. 5, 2005
6848208 Replaceable blank firing barrel Feb. 1, 2005
6837139 Flash suppressor apparatus and methods Jan. 4, 2005
6823857 Barrel assembly with removable barrel insert for pneumatic paintball gun Nov. 30, 2004
6789342 Firearm Sep. 14, 2004
6769209 Removable interior barrel adaptable in an interior of an original barrel for ammunition or pellets for sport rifles Aug. 3, 2004
6718677 Plug for a firearm Apr. 13, 2004
6634128 0.22 caliber long rifle removable conversion system kit for black powder cap and ball reproduction and replica revolver--recreation and gallery shooting Oct. 21, 2003
6619179 Small firearm muzzle accessory mount Sep. 16, 2003
6606952 Shotgun adapter for use to school different gauge shells Aug. 19, 2003
6591534 Gun locking interface assembly for non-conforming components Jul. 15, 2003
6543173 Firearm assembly Apr. 8, 2003
6513274 Removable system for converting a breach loading shotgun to a .22 long rifle Feb. 4, 2003
6493979 Handgun system with an exchangeable barrel Dec. 17, 2002
6446559 Shotgun adapter for use to shoot different guage shells Sep. 10, 2002
6442882 Cartridge ejection mechanism for converted automatic pistol Sep. 3, 2002
6385891 Adapter for attaching sound suppressors or other auxiliary devices to weapons May. 14, 2002
6381894 Bola launcher May. 7, 2002

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