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S&W Revolvers: 1980 to the Present All NON-PINNED Barrels, the L-Frames, and the New Era Revolvers


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Old 12-07-2010, 07:52 PM
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Default M686 Engineering Changes.

Can anyone give me the time line for M686 Engineering changes ?? I have a -5 which I beleive is early 90's.

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~D~
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Old 12-07-2010, 11:29 PM
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The SCSW says -5 was 1997. Post the letters and a couple of numbers from your serial number and we can probably tell you what year your gun comes from.
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Old 12-08-2010, 10:44 AM
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Smith & Wesson model changes
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Old 12-08-2010, 02:26 PM
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I wrote up a brief listing of the engineering changes a while ago:

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Originally Posted by valkyriekl View Post
The 686 was introduced in the 1980 as the S&W Model 686 Distinguished Combat Magnum Stainless. It featured flash-chromed, forged hammer and trigger, and had a 6-shot cylinder.

-1 (1986): radius stud package, introduction of the floating hand.

The "M" recall (1987) for the no-dash and -1 guns was to fit a new hammer nose and firing pin bushing to deal with certain brands of ammo causing (potentially fatal) binding when fired.

-2 (1987) incorporated the "M" recall features as standard production.

-3 (1988) floating hand deleted, new yoke retention system

-4 (1993, apparently the most desirable) included a drilled-and-tapped frame, the introduction of the "+" model with 7 shots, flash-chromed hammer/trigger deleted (case-hardened only), new extractor, start shipping with round-butt frame only (no square-butt)

-5 (1997) change to MIM hammer and trigger and frame-mounted firing pin, as well as the frame lug being machined as part of the frame (prior to this it was a separate part, fitted to and pressed into the frame).

-6 (2001, current production) has The Lock

-7 (2002, Performance Center) chambers .38 Super instead of .357 Magnum

Edit: updated with information from the magic book.
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Old 08-09-2016, 05:12 PM
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My 2.5" 686 with Spegal grips/ -rick

[IMG]Smith 686 2 by alazgr8, on Flickr[/IMG]
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Old 08-09-2016, 05:19 PM
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Default A dash five.......

A -5 should NOT NEED the 'M' modifications.
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686, extractor, m686, model 19, model 686, performance center, scsw

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