what is the whole "dash" thing with S&Ws? What do the numbers after the dash mean and does it say "686-x" on the gun?
Good question Commander, was going to ask that myself but forgot to.Anyone?
The dash numbers are manufacturing revisions in S&W revolvers. Its not just 686s, all S&W revolvers have them. What each revision means is entirely dependent on the model. Sometimes it implies small changes, and in other cases somewhat big ones. For example the 686-5 revision is the last model to not have the key lock.
686 ''dash nothing'' - 1980
686-1, 1986 - radius stud package and floating hand
686-M - 1987 recall stamping on earlier versions
686-2, 1987, hammer nose change, bushing and ass'd parts
686-3, 1988, new yoke retention system, 1990 - 2 1/2" barrel introduced.
686-4 1994 - 1998 - many changes including move to 7 shot, sight changes etc.
686-5 revision built with MIM parts and frame-mounted firing pin. varied other changes
686-6 introduction of S&W internal lock
a few pages earlier someone posted a 586 with a JARVIS WEIGHT on the barrel. are these still obtainable?
Sort of. They're not made in the same design as the old Jarvis weights(I think), but Jarvis does still make 686 competition barrels and 8oz barrel underweights. Heres a link.
http://www.jarvis-custom.com/Products/tabid/53/ctl/ProductDetail/productId/11/mid/388/Default.aspx