I am about to purchase a 5946 and like to have a parts kit for all my handguns so does anybody know where the best place to purchase replacement parts to field repair it if it goes south? Thanks tbird

S&W sells parts. Also try Wolff springs and Numrich.

Let me hitch hike on this one.
What parts are most likely to be needed for 3rd. Gens?

Likely parts are...

Recoil springs
Main springs
Firing pin
Firing pin springs
Trigger play spring
Extractor
Extractor spring
Extractor pin
Ejector spring
Side plate assmbly
Recoil spring guide assmbly

My list is more likely to less likely (top-bottom).
Feel free to add to this list, guys.

S&W will have most of these, but some will be a hunt to find.

Just to set the record straight, most 3 gen. guns will not need much beyond a thorough cleaning, and a recoil spring. The sources listed can provide parts if needed.

Hey, I am not saying that these items will fail/break. I love my S&W 3G autos. I just like having some parts on hand.

Thanks , I have had a couple 3rd gens over the years and have just now gotten back into them. Murphy has taught me over the years to always have plan B. Thanks for the list Yeti HCH thanks for the source. Great help as always. Thanks tbird

You are most welcome, Tbird!

Plan B is smart. If you use your S&W's, you may need some of the listed items someday.
These parts make even more sense if you own multiple 3rd gens pistols. Also, some of the parts listed will fit several models.

tbird-You can get a service pack from Wolff that includes most all springs you'd ever need for your 5946. Irt didn't quite copy right but here's the line...scroll down once there.

Springs for SMITH & WESSON NUMBERED SERIES Semi-Auto Pistols

Service Paks
For Use in:
59, 459, 559, 659, 915, 5903, 5904, 5906,5923,
5924, 5926, 5943, 5944, 5946, 9mm
SKU Description Price ($) Add to cart
69391 S&W 3904/5904 9MM, SERVICE PAK TYPE-I 14.99
69402 S&W 59/5904, 9MM SERVICE PAK TYPE-II
20.59