411 slide on a 410 frame

[rosewood]

Will it work?

Thanks,

Rosewood

 

[JohnHL]

Yes.

Unlike the 9mm "Value Line" models, S&W did not delete any rails or locking lugs on the 410 vs. the 411.

John

 

[rosewood]

Thank you.

 

[Fastbolt]

One thing to consider is that replacing a slide means you're also replacing the manual safety/decocking assembly, which is what indexes off the frame's sear release lever and controls the decocking 'timing'. Keeping the decocking timing within normal factory spec is important. For example, you don't want the hammer falling too soon ... or not falling when the decocking lever is at the end of its arc.

BMCM has a thread where he discusses the way the decocking timing is checked (and how a new lever is fitted), etc.

Also, in the aluminum frames replacing the original barrel may mean the frame wear in the camming shoulders may be different. You don't want any roughness (manually cycling the slide) in unlocking/locking caused by the barrel's camming shoulder cuts not smoothly moving up and down the frame's corresponding camming shoulders.

 

[JohnHL]

There are always safety and reliability concerns when mixing and matching parts and all due diligence should be undertaken.

It goes without saying that decock timing should always be tested when changes are made.

Fortunately, 2nd and 3rd gen pistols have the firing pin safety as a redundant feature in case the decock timing is off.

That however is no excuse for not testing (and correcting, if needed) decock timing.

Just a little back-up in case someone forgets.

John

 

[rosewood]

So, would using the original barrel, safety etc mitigate any issues with swapping slides?

 

[Fastbolt]

So, would using the original barrel, safety etc mitigate any issues with swapping slides?

Depends.

Only way to know is to check the decocking timing with the different slide installed.

Even if the manual safety assembly is the same, it doesn't mean the relationship (tolerances) of the manual safety assembly to the sear release lever may remain the same with the different slide in place.

 

[rosewood]

Ordered a 411 slide off ebay. It almost fit. Dropped in on my 4006 and no issue. On the 410, there is a slight raised part on the rail contact at the muzzle end. The 411 slide is raised slightly higher than the 410 and prevents the slide from going back.. I will take off that bit of metal on my mill then try again. But I do believe it is going to work. Once I get the slide fit, I will then go about checking the timing.

Rosewood

 

[rosewood]

Milled off offending material. Blued, and it now fits on the 410 frame. Timing is good, have to get to range to test now.

This reae site came on thr 411 slide. Never seen one like this before. Factory??

Rosewood

 

[JohnHL]

Milled off offending material. Blued, and it now fits on the 410 frame. Timing is good, have to get to range to test now.

This reae site came on thr 411 slide. Never seen one like this before. Factory??

Rosewood

Yes, that is the factory rear sight for the 411.

Same rear sight as used on the 915: S&W p/n 234490000.

One of the ways S&W reduced production costs for the 915 and the 411 was not paying a fee to use the "Novak" sight.

John

 

[jsbethel]

This rear site came on the 411 slide. Never seen one like this before. Factory??Rosewood

The sight was bubba modified using a revolver sight blade - nice work, sort of.

 

[rosewood]

The sight was bubba modified using a revolver sight blade - nice work, sort of.

So, did someone modify the sight on the 411 aftermarket? Or did it come with the revolver blade from factory? My old 5903 and my 915 have the site you posted with the one piece site. The 411 came with the blade installed.


Rosewood

 

[rosewood]

410 shoots flawless with the 411 slide on it. It was shooting low, so that rear sight will have to be replaced. No problem. I may go ahead and mill it off for the Novak.

Rosewood

 

[Brian Parrish]

410 shoots flawless with the 411 slide on it. It was shooting low, so that rear sight will have to be replaced. No problem. I may go ahead and mill it off for the Novak.

Rosewood

Great!
Let us see that when it is done!

Regards,
BrianD