I just have the end friction fit on at least for now. Going to mess around with with a little bit of weight for balance. Right now I have a 9mm casing over the end where i cut it and the end over that. Piece I cut off weighed 7.9 grams, 9mm case is 4g I didn't weight the foam butt cap. Rod seems slightly tip heavy with a Legalis 2000 mounted to it.

Thanks for the tip on sealing it with epoxy.