Trigger stop rod or pin

[97thSignalman]

I have a number of takedown manuals for K frame revolvers. Two of them show a tirgger stop rod or pin in the center of the trigger rebound spring. You are cautioned not to loose it during disassembly. I have disassembled a number of my K frames over the rears including a model 686-3, a model 14-4, a model 10-6, and several older M&P's.

None of the ones that I owned had that pin and I have seen a number of exploded parts diagrams that do not show such a pin. What's the deal with these pins? Do some models have one and others do not What's the deal here?

 

[bgrafsr]

Generally the trigger stop rod was installed in N frames, but not all N frames have them. The K frames had a different setup that included a small triangular (sort of) piece of metal with a hole in it, that fit into a slot on the frame behind the trigger. This stop was held in place by a small screw, which was hidden when the side plate was on the gun.

S&W cautioned owners who had the stops installed to remove them if the gun was used for defensive purposes, such as Police Dept's., etc, as the stop could move if the screw loosened up, and would keep the trigger from moving all the way back to release the hammer, thus preventing the gun from firing. S&W finally stopped installing the stops, even though the slot was still milled into the frame.

 

[bgrafsr]

I see you are from Chagrin Falls. Hope you plan on attending our S&W Meet at North Olmsted Sportsman's Club today. Starts at 9:00AM and goes to 2 or 3 PM.

Address is: 5743 Bradley Road, No. Olmsted, OH 44070.

 

[97thSignalman]

Thanks Bill for the explanation. It makes sense because the 2 manuals that showed the pin were for the Model 29 (N frame, right?) but stated that the instructions were applicable to a long list of popular K and L frames as well. Implying that the trigger stop rod in the 29 is found in the others as well. Or, at least the reader could infer that.

Well, at least now I can stop wondering if I lost all those mysterious pins somewhere.

Sadly, I have a tight schedule today so I will not be able to visit the S&W event that you mentioned.

 

[97thSignalman]

Trigger stop

I noticed that little triangular piece behind the trigger on my one remaining Smith (a 14-4, one of only two guns that I kept after I sold off my entire collection at auctions over the last few months in preparation to moving to a retirement community). I went to the Numrich parts web site and found Item 74 on the diagram for model 14-4's. I take it that this is what you are talking about.

 

[OldChief]

It sounds like you're referring to the trigger lever which connects with the rebound slide. If that's the case, I haven't seen a K frame revolver or any other for that case, without one. Can you post a picture of what you're referring to?

 

[bountyhunter]

I have a number of takedown manuals for K frame revolvers. Two of them show a tirgger stop rod or pin in the center of the trigger rebound spring. You are cautioned not to loose it during disassembly. I have disassembled a number of my K frames over the rears including a model 686-3, a model 14-4, a model 10-6, and several older M&P's.

None of the ones that I owned had that pin and I have seen a number of exploded parts diagrams that do not show such a pin. What's the deal with these pins? Do some models have one and others do not What's the deal here?

They do virtually nothing. It's supposed to reduce trigger overtravel on SA pull.

 

[97thSignalman]

The item that I was originally talking is simply a cylindrical pin that is inserted into the center of the trigger rebound spring. It is not any kind of lever. I have come to learn that they were used in only a few revolvers like the model 29 and possibly some 686's. It was used to limit trigger travel in those revolvers where it was employed. Others (like most of my K frames) used the little triangular stamping pictured above that was positioned in a slot in the frame right behind the trigger.

 

[ruggyh]

They are used in all X-frames (460 and 500).
As stated they control over travel.

Use #41 drill steel as replacement if you need to tune.
Typically .406 inches in X-frame but may need to be longer or shorter.

Caution if you shoot double action or heavy recoiling loads I would leave some over travel.

Good luck and be safe
Ruggy

 

[ameridaddy]

I just did a spare parts survey for all my Smith revolvers. It wasn't in any of the K frames, all of which had the stop in the frame slot behind the trigger, but I found the pin in 25-2, 25-5, 25-9, 27-2, 29 and 57 exploded views.
See PN 5306 (S&W no. 053060000) at bottom center of exploded view pg 2.

 

[epj]

This is a N frame only part. They need to be about .700 if memory serves. The rounded end needs to go to the inside. Much fitting is involved. A properly fit over travel pin will go a long ways to increase accuracy.

 

[muddocktor]

ameridaddy, don't you wish the prices on that exploded diagram were still accurate? $6 for a target trigger and also a target hammer, $18 for a barrel and $20 for a complete cylinder with extractor and gas ring!

 

[L Pete]

Okay, I'll be different....I've seen them in K frames back in the 1970s, but they're usually unusual to find. I haven't seen very many, but I have seen them. That said, I've only seen a couple with the rod in the rebound spring. As it was 40+ years ago, I can't remember exactly which K-frames they were in (want to say Model 14s or19s), but I do know that they were K-frames, as I had very, very few N-frames in those days.

Now, the disclaimer: I'm working with a faulty memory here, and it was forty plus years ago, so, YMMV.....

 

[ameridaddy]

ameridaddy, don't you wish the prices on that exploded diagram were still accurate? $6 for a target trigger and also a target hammer, $18 for a barrel and $20 for a complete cylinder with extractor and gas ring!

Oh my yes.
Those prices are now the shipping cost for the part.

 

[bountyhunter]

The item that I was originally talking is simply a cylindrical pin that is inserted into the center of the trigger rebound spring. It is not any kind of lever. I have come to learn that they were used in only a few revolvers like the model 29 and possibly some 686's. It was used to limit trigger travel in those revolvers where it was employed.

Came in some of my 66's as well.

 

[rbmorse]

My Model 10-11 had one. I lost it replacing the rebound spring with a lighter weight part and have not been able to locate a replacement. Gun works fine without it.

All of the K-Frame rebound slide replacement kits I've seen on line do not include the pin, although most have the spring.

Numrich's online schematic for the 10-9 doesn't show it, but they do list the part (out of stock).

Brownell's lists the part as discontinued by factory and no longer available.

 

[xcpd69]

The K-frame screw mounted trigger stops were a known problem back in the mid 70's with Law Enforcement Departments having their armorers remove them. This is my recollection from the Oklahoma City area.

I believe the problem showed up on the range and not in a critical situation.

I do remember a memorandum from Smith & Wesson circulating advising removal of the stop on duty weapons, circa 1975-76...