Once again, thanks to Jim Supica and Richard Nahas.
(Emphasis added)
• 686-4 (1993): Change rear sight leaf, drill and tap frame, change extractor, introduce Hogue grips.
• 1995: Introduce power port barrel.
• 1995: Introduce 7-shot cylinder with seven flutes in 6" barrel length with round butt frame. Serrated backstrap, smooth trigger, 7-point star extractor, RR front sight, service hammer WO rear sight blade, Hogue grips with S&W logo.
• 1996: Delete square butt; begin shipments in a foam-filled blue plastic case
• 1997: Change thumbpiece; ship with Master trigger lock.
• 686-5 (1997): Change frame design to eliminate cylinder stop stud; eliminate serrated tangs; change to MIM hammer with floating firing pin; change to MIM trigger; change internal lockwork.
• 686-6 (2001): Internal hammer and trigger key lock.
Supica, Jim; Nahas, Richard (2006-12-20). Standard Catalog of Smith & Wesson 3rd (Standard Catalog of Smith and Wesson) (p. 258). F+W Media, Inc.. Kindle Edition.
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Bob
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