Rem 700 Custom Gun Parts

[TUFFBUFF]

Where do you guys get your custom gun parts and/or upgrades? I'm in the process of buliding one and have a few left

Trigger - shilen or rifle basix?
Firing pin/shroud - need a j-lock delete, thinking Gretan
Bottom metal - Ptg Oberndorf aluminum
wyatts extended mag box - center feed in a short action, and to load out a bit.

I got everything else, action,barrel,rings, and the scope and stock on order.

been on RPS's site, anywhere else preferably in canada. want to keep shipping costs down and a fair price. Also if anyone has any of these parts how do you like 'em or what would you recommend.

thanks!