SACair Forum

What are the differences in the m249 gearbox

May 30, 2010 9:23pm
What are the differences in the m249 gearbox compared to an m4's and what good replacement parts are there. I have an echo 1 m249.
Jul 26, 2010 2:29am
as far as gears and stuff not much is different to a typical version 2 gear box. gears, piston, springs, spring guide, cylinder, and cylinder head are all the same and interchangeable.