It's a version 2 mechbox so pretty much any piston will fit. My go-to piston is the SHS 14 tooth piston. If you want to change your piston head, Lonex ones are very good.
Is there anything wrong with the hop up unit itself, or did you mean you want to replace the bucking? Do you have a CQB or carbine length barrel in it?
__________________
I change primaries like other people change socks.
|