I have never upgraded my trigger that being said I'm wondering would I be able to use a wolf extra power hammer spring on lets say an ALG, RRA 2 stage???

Sure you can, but it will slightly increase the trigger pull weight because of the extra pressure of the heavier spring. I actually run JP light weight springs (yellow) with my RRA triggers with excellent results. Now to be completely honest I do NOT shoot steel case ammo which might result in a light primer strike with these lighter springs which the heavier spring you mention would cure I am sure.

THANKS. Yes I am curious about it because its a 5.45 build shooting 7n6 ammo and ballistic advantage sent an extra power hammer spring with the barrel and I'm going to use it on a standard trigger for now but in case I want to upgrade I wasn't sure if it would work on those other manufacturers