It really depends on what you're doing with the rifle.
I have a precision lower that I have the Geissele SSA in that is all I'll ever need. The rest of my lowers have PSA, Daniel Defense, or the ALG parts kits and they each work fine.
I have a precision lower that I have the Geissele SSA in that is all I'll ever need. The rest of my lowers have PSA, Daniel Defense, or the ALG parts kits and they each work fine.