Quote Originally Posted by averageplinker View Post
By coil diameter of 13.5mm are you referring the internal diameter of the spring?

PS Sportwaffen Schneider list the export spring for these as 3.4mm wire, 21.4mm OD, 14.6mm ID and 225mm long
PPS I would love to know how many coils your spring has as I have a project 335 which I am toying with reducing the power.
Yes, Internal Diameter, sorry for my clumsy writing.

Thanks for the info, 3.4mm is a hefty wire!

I'll get some proper measurements the next time I open the gun(friday hopefully).