Colt Single Action Army was discontinued in 1999, as was the 4.75" variant, which was reintroduced in 2002. Manufacturing of the Colt Cowboy was discontinued in 2003. Colt engraved less than one percent of its first generation production of the Single Action Army revolver, which makes these engraved models extremely rare and valuable with collectors. Engraved pieces were often ordered by or for famous people of the day, including lawmen, heads of state, and captains of industry. This tradition began with the founder, Samuel Colt, who regularly gave such examples away as a means of publicity for Colt. Colt employed a number of engravers,
Colt M1877 detective and then head of CID, Jerome Caminada. Old West outlaw John Wesley Hardin frequently used both "Lightning" and "Thunderer" versions of the Colt 1877 revolver. Likewise the 1877 "Thunderer" in .41 caliber was the preferred weapon of Billy the Kid and was his weapon of choice when he was killed by Pat Garrett in 1881. Colt M1877 The Colt M1877 was a double-action revolver manufactured by Colt's Patent Fire Arms from January 1877 to 1909 for a total of 166,849 revolvers. The Model 1877 was offered in three calibers, which lent them three unofficial names: the "Lightning", the "Thunderer",