3rd generation slides
- Thread starter Doug44
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I don’t know. I’ve never seen a 649 slide before. What do they look like?
Why would you do this? 649 vs 639 nonwithstanding.
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googled "639 vs 439 slide compatibility" first entry says you can.
Again, I'm not sure why you would franken a nice gun to do this. There is a nice slide set on ebay complete with barrel and recoil guide for a 439 right now.
I'm assuming you have the frame, not the slide already in your possession.
Again, I'm not sure why you would franken a nice gun to do this. There is a nice slide set on ebay complete with barrel and recoil guide for a 439 right now.
I'm assuming you have the frame, not the slide already in your possession.
stansdds
Member
A 639 slide will work fine on a 439 receiver, they are both 2nd generation pistols. The 639 slide on a 39 or 39-2 receiver will be a problem as the second gen pistols have a firing pin safety and the first gen pistols did not, so there would be no lever in the first gen receiver to push up and deactivate the firing pin block. It might be possible to remove the firing pin block from the 639 slide and make it work on a first gen receiver.
A word of caution when mixing compact parts with full size parts:
S&W made the rear of the receiver slide rails and rear of the slides on second gen compact and early third gen compact pistols shorter and rounder than those of the full size pistols. Putting a 469/669 or early production 6904/6906 slide on a full size receiver results in the end of the slide being about 1/4 inch shorter than the rails on the rear of the receiver. It will function, but look hideous. Late production 6904/6906 slides, the ones with factory Novak style sights, seem to have been cut to the same rear length as full size pistols.
A word of caution when mixing compact parts with full size parts:
S&W made the rear of the receiver slide rails and rear of the slides on second gen compact and early third gen compact pistols shorter and rounder than those of the full size pistols. Putting a 469/669 or early production 6904/6906 slide on a full size receiver results in the end of the slide being about 1/4 inch shorter than the rails on the rear of the receiver. It will function, but look hideous. Late production 6904/6906 slides, the ones with factory Novak style sights, seem to have been cut to the same rear length as full size pistols.
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cherrypointmarine
Member
I found a 3906 slide , complete , on Guns International . I trade it out on my 639 due to the fact the 3906 has adjustable rear sights . The same can be said of my 59 and 659 .
Green Frog
Member
Just to add to the mix, I’ve successfully transplanted both a 439 and a 915 slide onto my 639 frame with no alterations necessary except replacing the worn sear lever which probably needed doing anyway. Note that everything has been parts from full size Gen 2 and 3 pistols and as stansdds warns, you may experience difficulties with shorty slides. Also avoid the 908 and 910 slides... their rails are different.
Show pix when done, please!
Froggie
Show pix when done, please!
Froggie
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