Abstract: A device for cleaning tubular passageways of a firearm that carries ignition products of a firearm propellant includes a relatively rigid hollow, tubular guide and a compliant cleaning rod within the bore of the hollow guide. The cleaning rod travels within the hollow guide before entering the tubular passageway to be cleaned. The cleaning rod is sufficiently flexible so as to be unable to support its own weight without substantial bending when supported at one end in a cantilever fashion. A cleaning kit is also provided including the cleaning device and a plurality of related cleaning items, such as brush-like cleaning elements.

Abstract: A device for cleaning tubular passageways of a firearm that carries ignition products of a firearm propellant includes a relatively rigid hollow, tubular guide and a compliant cleaning rod within the bore of the hollow guide. The cleaning rod travels within the hollow guide before entering the tubular passageway to be cleaned. The cleaning rod is sufficiently flexible so as to be unable to support its own weight without substantial bending when supported at one end in a cantilever fashion. A cleaning kit is also provided including the cleaning device and a plurality of related cleaning items, such as brush-like cleaning elements.

Abstract: This invention relates to the electrodeposition of chromium onto zinc or zinc alloys, and particular electrodeposition bath conditions. The chromium plating bath is suitable for enhancing surface hardness of relatively high copper, low aluminum zinc-alloys. The bath is an aqueous solution which includes chromic acid and sulfate ions in amounts so that the weight ratio of chromic acid to the sulfate ions is about 75:1 to about 125:1, respectively. The bath further includes specified amounts of fluoride ion, boric acid and an alkali metal carbonate. The bath may additionally include an alkali metal bicarbonate in a carbonate-to-bicarbonate weight ratio of about 0.6 to about 13:1, respectively.

Abstract: A wear-resistant article comprises a zinc base metal having a substantially continuous, hard chromium skin layer on at least one surface thereof and a chromium-enriched subsurface layer of the zinc base metal situated immediately below the chromium skin layer. The chromium-enriched subsurface layer has a gradually decreasing chromium content in a direction inwardly away from the skin layer and is at least as thick as the skin layer. The wear-resistant article of this invention is produced by direct electrodeposition of chromium onto the zinc base metal from a self-regulating bath under controlled conditions.

Abstract: A wear-resistant article comprises a zinc base metal having a substantially continuous, hard chromium skin layer on at least one surface thereof and a chromium-enriched subsurface layer of the zinc base metal situated immediately below the chromium skin layer. The chromium-enriched subsurface layer has a gradually decreasing chromium content in a direction inwardly away from the skin layer and is at least as thick as the skin layer. The wear-resistant article of this invention is produced by direct electrodeposition of chromium onto the zinc base metal from a self-regulating bath under controlled conditions.