Variants
Trooper
Original model Colt Trooper - .357 Magnum
MK III
Colt Trooper MKIII with 4" barrel - .357 Magnum
Colt Trooper MKIII with 4" barrel (Nickel Plated) - .357 Magnum
Colt Trooper MKIII with round grips and 6" barrel - .357 magnum
Lawman
Colt Lawman MKIII - .357 magnum
Very early model Colt Lawman MKIII with slimline grips (circa 1969) - .357 Magnum
Lawman 2" snubbie
During the first couple years of the Mk III production the Lawman snubbie was made with an exposed ejector rod. Approximately 1976 Colt redesigned the frame and added a lug to protect the rod. --Jcordell 20:36, 16 December 2010 (UTC)
Slightly disreputable example of a DAO conversion, but neat.
MK V
Colt Trooper Mk V with 4" barrel - .357 Magnum
Colt Trooper MK V 'Peacekeeper' with Pachmayr grips and parkerized finish - .357 Magnum