Engineering and Production Changes
• 1981: Introduction at AAA000x serial number prefix.
• 586-1 (1986): Radius stud package, floating hand.
• 586-2 (1987): Change hammer nose and associated parts.
• 586-M (1987): Product warning by S&W: M over stamped to signify a modification by the factory
or warranty station for Models 586 and 586-1.
• 586-3 (1988): New yoke retention system.
• 1992: Delete 8-3/8" barrel and four-position front sight; delete nickel finish
• 586-4 (1993): Drill and tap frame, synthetic grips, change rear sight leaf, change extractor.
• 586-5 (1993): Brazil contract in .38 Special.
• 1995-96: Delete square butt.
• 1996: Begin shipments in blue plastic cases.
• 1997 Delete 8-3/8" barrel/change to MIM thumbpiece; ship with Master trigger locks.
• 586-6 (1997): Change in 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.
• 1999 (November): Model 586 discontinued.
• 2000: Special 7-shot with internal lock, October 2004, 4" & 6" RR WO WG RB.