Well M401 300 fps average....finally

I have been using my jet lag to my advantage this week. I have finished the M249 (minus paint) and I have been looking to get 300 fps average from the well m401. Last night I installed some metal gears and cylinder head, unequal 1.3 spring etc etc. I have to say it sounds completely different now and the sound alone is enough to scare you. Hot of the chrono this morning…nailed it.


I’ve had mine there for some time now.

It pays, but isn’t mandatory for a 1.3, to reinforce the front of the gearbox

I ripped mine off at some point right before I became a fungible pellet collector