Fixing a Gen. 3 4013

[Potato86]

Good evening, this is my first (of many) posts!

I just picked up a Gen.3 Mod 4013 the other day (knowing what I know now, I over paid for). Having no experience with these guns at all, thought it may be a DAO model, as the safety disabled the trigger AND the hammer followed the slide into battery when function checking.

It wasn't until after I had completed DROS and returned home did I realize the hammer is supposed to remain in the single action position after the slide is racked.

Does anyone with more experience than I have an idea as to why this would be happening? Before I start throwing more money at it.

 

[cw4ski]

Function check

1. Trigger lifts hammer and releases on the long pull - Double action.

2. After the shot / slide cycles the hammer will stay up in the single action mode unless the safety / decocker is in the down position.

3. Decocker up gun the trigger should lift or release hammer.

4. Decocker in the down position should do several things: capture the firing pin, block firing pin and release hammer so it falls.

 

[JohnHL]

Welcome to the Forum, tater!

When the safety lever is down (the "on safe" position) the hammer should follow the slide to its "at rest" position.

When the safety lever is up ( the "off safe" or "ready to fire" position) the hammer should remain cocked when the slide is racked.

John

 

[SHOOT1SAM]

Welcome Potato86.

From your description, there is literally "nothing" to fix on your pistol; sounds like it is working as intended. I don't have half of the knowledge many on here have, but I'm all-but-certain that your TDA pistol can be pretty easily converted to DAO.

With the craziness in today's market, it would be interesting to know what you paid for it, and why you think you may have over-paid, if you don't mind sharing.

Sam

 

[kbm6893]

When the safety is on the hammer won't stay in the back position. This is the way many load their weapons. Safety on and rack slide then holster. Some take safety off before holstering.

 

[Potato86]

It was late, I should have been more coherent when I was tying.

To clarify, this occurs (hammer following the slide home) with the safety/decocker in the up (fire)position. The hammer will not remained cocked in the single action position at all when the slide cycles, always dropping into the double action position.

 

[Potato86]

Welcome Potato86.

From your description, there is literally "nothing" to fix on your pistol; sounds like it is working as intended. I don't have half of the knowledge many on here have, but I'm all-but-certain that your TDA pistol can be pretty easily converted to DAO.

With the craziness in today's market, it would be interesting to know what you paid for it, and why you think you may have over-paid, if you don't mind sharing.

Sam

No I don't mind, I paid $750. It appears in good shape and the double action pull is smooth. But once I discovered that is was not a DAO model, and the hammer is supposed to be locked back for SA fire I realized I didn't get what I believed I paid for.

Now I am leaning on you guys here for assistance and maybe a remedy.

 

[URIT]

Welcome aboard from coastal North Carolina.

It appears that you wanted to buy a DAO model 4053 rather than the TDA (traditional double-action) model you bought. The model 4053 is a sweet pistol, tears up targets at 10 yards, and is a nice CCW choice.

The 4013 model is built on a 45 frame and can be modified to 10mm.

 

[Potato86]

Welcome aboard from coastal North Carolina.

It appears that you wanted to buy a DAO model 4053 rather than the TDA (traditional double-action) model you bought. The model 4053 is a sweet pistol, tears up targets at 10 yards, and is a nice CCW choice.

No, I had wanted a DA/SA pistol that the 4013 was based upon the homework I did before buying. I didn't know the DAO models had a different designation beforehand (I do now). So now the goal is to clean/remedy whatever issue this one I obtained has.

As soon as it's out of the ridiculous 10 day hold CA implements…

 

[Aegis]

This gun is not on the Ca roster of approved guns, so the price is in line for Ca. A qualified gunsmith should be able to fix it or send it back to S&W.

 

[Potato86]

Any idea with which part may be causing the problem? I've watched the take down videos and it seems fairly straightforward. Maybe something is gummed up and needs to be fully cleaned?

What I'm not comfortable with is fitting parts, that I will happily leave up to a competent smith.

 

[JohnHL]

With the safety lever up (in the "off-safe" or "ready-to-fire" position) can the hammer be cocked for single action and will it hold?

John?

 

[Potato86]

With the safety lever up (in the "off-safe" or "ready-to-fire" position) can the hammer be cocked for single action and will it hold?

John?

It has the bobbed hammer, so I couldn't manipulate it by hand with it in the forward position.

This is it before it went into the 10 day hold. Just so we know what model and configuration we are talking about.

 

[JohnHL]

The parts involved in holding the hammer cocked in single action are the hammer (specifically the single action notch), the sear, the sear spring, and the sear release lever.

Wear, damage, or modification of any of these parts could result in the condition you are experiencing.

John

 

[Potato86]

The parts involved in holding the hammer cocked in single action are the hammer (specifically the single action notch), the sear, the sear spring, and the sear release lever.

Wear, damage, or modification of any of these parts could result in the condition you are experiencing.

John

Anyone you recommend to remedy this issue? I have no qualms with sending it out for the work. I just want to make sure I don't end up with a paperweight.

 

[M29since14]

…The 4013 model is built on a 45 frame and can be modified to 10mm.

Some 4013s are on the .45 frame and some were similar to the 6906. The OP's gun appears to be one of the later ones made on the 6906-size frame.

Maybe our member Fastbolt will come along with some advice on the OP's problem. I would guess his gun was deliberately modified to function that way, but that's only a guess. I would be careful shooting it until he knows for sure. Wouldn't load more than two rounds, and not shoot it at all if anything seems dangerously out of whack.

 

[Potato86]

I planned to not shoot it at all once it's out of holding. My fear is a runaway firing cycle.

My local smith said he is familiar with them and will take a look once it's out of holding. However I am still open to advice or assistance from everyone here. As I'm sure you may have more experience

 

[M29since14]

We have a couple of 3rd Gen experts here. Always interesting to read what they have to say. Good luck with your new 4013. Let us know how it works out.

 

[Potato86]

Will do, hopefully I didn't just acquire a S&W grade .40cal paperweight

 

[Doug M.]

IIRC, Fastbolt is still in CA. If he is willing to look at it, even though it might be a longish drive depending on where he is, that might be better than the hassle of shipping.
BMCM is up to speed and although you would have to ship it to him, I am confident you would like the results. He's done a couple things for me, and what I have seen for feedback from other members for whom he has done work is similar to mine. Great work, fair prices.