[grimreefer]

I'm planning on doing another round of upgrades on my TM MP5. So far I've got a bearing spring guide, Modify 100 spring, and steel bushings. I need some more range and accuracy, so here's what I'm planning:

Mad Bull Quicksilver Black Oxide Silencer (157mm)
Mad Bull 6.03mm Tightbore Barrel - 509mm (cut down to approx. 385mm)
Prometheus Air Seal Chamber Packing (Hard Type) Hop Up Rubber

I'm considering the following:

Modify 110 Spring
Modify Polycarbonate Bearing Piston Head
Modify Air Seal Nozzle - MP5 Series

I'd like to get some advice or approval regarding these parts. Is my barrel length okay? Anybody know if the Modify Poly piston head is any good? Should I consider any other parts? Would a polycarbonate piston reduce wear on the gearbox?

I'd like to be able to get everything I need from airsoftparts.ca

Much appreciated!