I have a 4 inch 686 no dash I bought used a few years ago. About a year later I got a used 4 inch model 64-3. My 638 is aluminum and stainless and then last month I bought a new 4 inch 617.
Even though they are black, the barrel and slide on my M&P Shield are also stainless steel.
4" 686 purchased in '84, 6" purchased in '83, 610 with 6" barrel from '98, 617 with 6" from 07, performance center 945 purchased in '08, Performance center 952 from 2010, 624 with 4"barrel purchased used in 2011, 625 with 5" barrel from 2011, model 66 with 4" barrel purchased used in 2015 and a 5 " 686 pro series bought in 2015. I think that's all the ones I still have - Smiths anyway.
I have the following S&W stainless guns.
60 no dash one of my EDC
686-6 great range gun
627-5 my bowling pin gun
629 which is really a lot of fun
and two 66s, 66 no dash and 66-1 (these are multiplying on me. Pictures in following post.
I'm down to two at present, a Model 60 no dash and a 4" Model 66 no dash.
Stainless Smith & Wessons I have had in the past and some multiples there of:
Models 60,63,64,65,66,67,617,624,625,627,629,640,642,645,650,651,657,686,940,2206 and 3913.
Smith Wesson model 60 No Dash. My back up gun for over 40 years
Smith Wesson model 67 Back up duty gun in case my model 66 went down.
Smith Wesson model 66 Primary duty weapon for several years.
Smith Wesson model 6906 Carried when i was a detective.
Smith Wesson model 659. Bought it to use on raids as a Detective In case more ammo capacity was needed.
Smith Wesson Model 648 Shoulder holster gun for hunting. ( .22 mag)
Smith Wesson model 622 Target Practice gun. ( cheaper to shoot)
Smith Wesson model 1911 .45 ACP Gvt. Model First Smith Wesson Govt, model series produced.
Smith Wesson model 640 .357 mag Engraved. My retirement gun.
Smith Wesson M & P in Stainless .45 Just because i wanted it..
Smith Wesson Model 66 2 1/2 Purchased from a retired cop who needed some money. Former Miami Vice Cop.
Smith Wesson 686 6 inch Hand gun hunter special .. Stand gun for Deer.
Ruger Single Six in Stainless .22
Ruger Vaquero in Stainless .357
Riger M-77 ,223 Stainless
Ruger Mark VI .22
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My 5906 and Mod 65-3 bought at Pawn and Guns Sales. I didn't know anything about 5906 and 2nd/ 3rd Gens till after joining S&W Forums. The Mod 65 was covered with oil , grime and scratched , I cleaned it up with CLP and it shoots great.