You can install (or pay to have installed) any CGW package you want. Reliability will be 100% if you don't use a hammer spring under 13 lbs. You can experiment with the 11.5 lbs (black) hammer spring (I have and it's been 100% reliable), but the 13 lb (blue) hammer spring will set off any properly-seated primer known to man.
The spring color codes is for Cajun only. Other vendors may or may not have the same colors for each weight.