Originally Posted by audi_bhoy
I can help you with my experience maybe. I bought the M16 advanced version of Buyairsoft.ca, and it was supposely shooting 375fps. When testing it, it shot 330 with .2g, all I did is change the spring, it now shoots pretty consistensly around 393fps, considering the 509mm Tighbore barrel included in it, it's the same feeling than my previous G3-SG1 with upgrades. I've got told by the seller that the silver electroplated tightbore is the same for both version.
Overall, I love this gun, all I was hoping is that it would be as good as my TM G3 was, and it's actually doing very good!
just for curious, why didnt you change the piston head?
it seems like no one like it, is that bad?