Anyone know of a source for a trigger play spring for a 4013? I've tried the obvious sources: Brownell's, Midway, Numrich, even Hoosier. No dice. Help?

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Cogito, ergo armatus sum.

Have you tried S&W? That's where I was getting mine (as an armorer).

BTW, unless you're very experienced with the proper installation, get at least 2 of the soft rivets, as they're easy to damage if you make a mistake.

Have you ever replaced a trigger play spring? It presumes you know how to disassemble the frame to the point where the drawbar can be removed. Damaging the sideplate or the disconnector can be a concern is you're inexperienced, or even just distracted at the wrong moment.

Replacement only requires a 1/16" straight shaft pin punch, a vise (even a table-top clamping vise will work) and a 2 oz ballpeen hammer (the ball end is needed). Not losing or mangling the rivet is the only tricky part (and getting the spring mounted firmly against the drawbar head, and keeping it that way until the rivet is fully flattened).

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Ret LE Firearms inst & armorer

Yeah, guess I'll have to contact S&W. I've torn down a lot of guns, but not the 4013. I figured if it looked too difficult, I'd take it, and the parts, to my local smith. We have a reputable one fairly close. In fact, I should probably just call him; he might even have a spring in his stock. Thanks.

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Cogito, ergo armatus sum.

Probably best to let a smith familiar with S&W TDA pistols handle the chore for you. It's not that the actual replacement & gentle peening of the rivet is difficult, but that you have to get the drawbar out of the frame. While the frame can be stripped and the drawbar removed in a couple of minutes (by someone familiar with doing it), learning to do without damaging something during disassembly & reassembly is the real trick. Some of the video links of stripping 3rd gen guns have made me shudder a bit.

FWIW, out here the CHP actually started removing the TP springs and drilling the drawbar heads (wallowing out the rivet hole) to prevent future installation of them in older 4006 series guns, and then ordered their new TSW's made without the springs even being installed in the first place.

The TP spring does help reduce some of the "play" (looseness) in the SA trigger mode, but unless you're looking for it (doing slow-fire target shooting), it's not like most shooters would ever notice it being gone, especially when running the gun in fast-paced shooting drills.

I once did an extended 2-day sessions of drills, firing more than 800 rounds, and at some point both prongs of the TP spring snapped off in that gun. I have no idea when it happened, as I wasn't stopping to take the time to careful inspect the trigger play in SA mode during that time. It didn't affect function, so I didn't notice it, whenever it happened.

Most of the folks who have broken TP springs in duty weapons never notice it, bringing the guns to the attention of our armorers for some other reason (usually nasty, fouled weapons that have been abused and/or overly-saturated with solvents & CLP until function issues develop).

Funny thing is that while the TP spring only serves a purpose in TDA guns (DA/SA), since the drawbars used to be pulled from the same bins during production, the DAO guns got drawbars with TP springs. Complete waste of time in a DAO gun, as their isn't a cocked/SA hammer mode.

I chuckled the first time I was told that they'd decided to just go ahead and use drawbars with TP springs installed, for both TDA & DAO guns, as it was easier to just have ONE bin of drawbars on the assembly line.

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Ret LE Firearms inst & armorer

Is the spring even necessary?

Wow....zombie thread

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Ret. LE, FA Instr, S&W Armorer

It's alive! Haha

No, there is a thread somewhere on that subject. It keeps the trigger from clicking in single action. It doesn't hurt anything and seems one PD even had it removed. I can't stand the clicking. Easy replacement if you are handy at disassembling firearms. I had S&W replace under warranty as recent as about 2020 I think, free of charge.

Rosewood

If your parts available try in the link below -
Smith & Wesson Model 4013 Parts | Gun Parts Corp.

Just like we told you in your thread in the Semi-Auto sub-forum:

No.

John

Midway has the spring and rivet in stock.