Standard SP01- basic configuration is 3-dot meprolight night sighs, firing pin block, recurve trigger ( no overtravel stop), thin poly guide rod, std. length mag release, thin mag brake, two mags.
Most people I have seen upgrade at least the sights and do a trigger job. The firing pin block has to stay in place for the games. Some folks with thicker fingers find the recurve trigger bites the trigger finger on the trigger stroke.
The cost of the upgrades lead pretty quickly to the SP01 Shadow.