KSC G17 Upgrades

[JayRaff]

Hey guys, I'm back with more questions!

I just got the KSC G17 V3 and I'm wondering what parts I should be switching out right away. I have been reading that a tightbore barrel, high flow valve and the recoil spring would be good first mods but I'm not sure about anything else.

For instance, would the "Action Aluminum Cylinder Bulb for KSC M4 GBB / G17 Series / USP Series" on WGC for $5.50 be good?

This may be another naughty question, however, are we able to discuss where to purchase airsoft parts?

I'd appreciate any help or recommendations you guys can give