Patent ID: 7451707

Claim:
A gun barrel cleaning device comprising: a cartridge having a plastic or metal casing further comprising: a pin seal unit further comprising: a push pin having a parallelepiped sliding seal at a proximal end and a break-away seal at a distal end where said casing narrows, said sliding seal being axially oriented with respect to a gun firing pin and sealing said casing at one end and said breakaway seal being formed of two removably affixed hollow frustrums, an interior frustrum and an exterior frustrum, placed back-to-back and being axially oriented with respect to said firing pin and placed on said push pin in the location where said casing narrows at the end of the casing near a gun bore; a metal cleaning brush, said brush being affixed to and surrounding said push pin and being placed adjacent to a rag located adjacent to said casing; and a cloth rag, said rag being pierced by said push pin and placed on said push pin adjacent to said exterior frustrum of the break-away seal.