Third Gen Trigger Play Spring Replacement

[DirtyShirt]

I'm wanting to replace the trigger play spring on my 457 draw bar. It snapped off awhile ago. Doens't mess with function but I want to replace it.
I know how to disassemble/reassemble my 457. I'm very mechanically inclined. I can perform any task necessary to complete the procedure.
Has anyone done this procedure before and what if any special tools do I need?

 

[bigggbbruce]

I haven't done one. I have parts just in case.

Looks like you just need to remove old rivet and stake a new one with new spring.

 

[WR Moore]

Ok, working from memory: You need to remove the rivet that holds the broken spring in place. You can either grind the rivet head off from up top or flip the drawbar over and insert a drill into the hole on the bottom. I'd grind up top.

The original trigger play spring had two fingers, the product improved version has one big finger that does the job of two. Get extra rivets. Holding the drawbar, the spring and the rivet in firm contact while you peen the shaft of the rivet down inside the hole on the bottom of the drawbar can get tricky.

You'll need a good punch that'll fit down in the rivet hole in the drawbar, a hammer and-IIRC-a steel block. The first time I did it I didn't keep the parts tightly together and had to re-do it.

 

[DirtyShirt]

Ok, working from memory: You need to remove the rivet that holds the broken spring in place. You can either grind the rivet head off from up top or flip the drawbar over and insert a drill into the hole on the bottom. I'd grind up top.

The original trigger play spring had two fingers, the product improved version has one big finger that does the job of two. Get extra rivets. Holding the drawbar, the spring and the rivet in firm contact while you peen the shaft of the rivet down inside the hole on the bottom of the drawbar can get tricky.

You'll need a good punch that'll fit down in the rivet hole in the drawbar, a hammer and-IIRC-a steel block. The first time I did it I didn't keep the parts tightly together and had to re-do it.

Appreciate the tips. I'll get extra rivets and an extra spring just incase. I had an idea of putting the new spring and rivet into the drawbar as normal but instead of peening the buttom of the rivet just using epoxy to secure the rivet into the hole. After applying the epoxy, clamping the rivet against the drawbar(to keep the spring and rivet tight to the drawbar) until the epoxy cures.
Do you think that would work?
My thinking is that they used a rivet because that's how you did it back then. We have really good epoxies now and the parts aren't receiving alot of force.

 

[bigggbbruce]

No Epoxy..!! Last about 10 minutes. Must stake new rivet.

 

[mckenney99]

I finally found the photo guide from BMCM for replacement of the trigger play spring. This should be a sticky.

Thread 'So, you've got the annoying trigger 'click', Now what!'

Oct 14, 2018

Howdy Gents...

Well now, I've got this big10 on the healing bench for a checkup and one of the known issues...the trigger play spring is kaput!

The trigger play spring is that little copper colored thingy riveted to the forward end of your drawbar. Now that thingy is not actually copper but is in fact steel...sticks quite nicely to a magnet. The coloring is an effect of the heat treatment after it was punched & formed.

Anyway that spring is pretty thin and easily bent out of shape. It mics at 0.008" thick. If one goes scrubbing about vigorously in there with some implement like...

• BMCM
• Replies: 57
• Forum: Smith & Wesson Semi-Auto Pistols

• 

 

[DirtyShirt]

I finally found the photo guide from BMCM for replacement of the trigger play spring. This should be a sticky.

Thread 'So, you've got the annoying trigger 'click', Now what!'

Oct 14, 2018

Howdy Gents...

Well now, I've got this big10 on the healing bench for a checkup and one of the known issues...the trigger play spring is kaput!

The trigger play spring is that little copper colored thingy riveted to the forward end of your drawbar. Now that thingy is not actually copper but is in fact steel...sticks quite nicely to a magnet. The coloring is an effect of the heat treatment after it was punched & formed.

Anyway that spring is pretty thin and easily bent out of shape. It mics at 0.008" thick. If one goes scrubbing about vigorously in there with some implement like...

• BMCM
• Replies: 57
• Forum: Smith & Wesson Semi-Auto Pistols

• 

Great Find. I'll be using it as instruction to do mine.