What's your go-to for parts?

[feral]

Not sure if this is the right board for this, but what's everyone's best place to find parts that's not direct from a manufacturer?
I've been looking for a 5" PDP compact lower/frame and a 4" slide/upper for a comp project gun and I have had zero luck.
Really would not like to have to purchase 2 weapons to make it happen.
Suggestions?
Thanks!

 

[Dr_Mitch]

Walther protects it's products very much as if they were intellectual property. You will indeed need to buy two guns and try to mix and match them.