Project

[Aidanc94]

Hi all

I'm now looking at upgrading my beloved m4.

What is would some of you say the best barrel for the 407-433mm length.
I have a few lonex barrels in my others and work fine but want to try something different unless lonex is the best?

I prefer 6.02 or 6.03 but if some of u say 6.01 I will.

Thinkin of a lonex a2 high torque motor, shs gears and piston and piston head. Probably cylinder too. Prometheus or guarder 110 spring.
G&p hop up but need advice on a good barrel

Thanks