VSR-10 upgrades
 

Trying to decide on buying a Novritsch SSG-24 or going the upgrade route with a TM VSR-10, a Bar-10 VSR-10, or a Well 03 VSR-10?
If I go the upgrade route what are the minimum upgrades before installing a spring to get the gun to 480 fps and not have the extra stress break it. Trigger set, piston etc?
Thanks

on the VSR's you'd need a trigger set or sears and a piston. The deepfire sears used to be to go-to for sears, but they seem to be pretty weak lately.
laylax zero trigger and PDI V trigger are the most common. AA has a repro zero trigger, I've heard good and bad things about it.

I can get the AA trigger set and other AA parts from my local store Laylax is harder to find and more expensive