Quote Originally Posted by NamelessNPC View Post
My weapon is not a magic weapon
No, it isn't. Technically it would be a psionic weapon, and those are also capped at +5. I've never seen anyone enhancing their weapon past that point ever since psionics first came out in 3.5, although personally I don't see anything wrong with ruling it otherwise. A slight increase in weapon enhancement isn't gonna break the game.

I would however suggest you re-check your ML enhancers. A lot of them likely don't stack as is the case with Wild Surge and Overchannel for instance. +10 seems like a bit much unless you're doing a Perfect Surge.