The SA triggers aren't the same. The DA /SA requires a longer reset to make the sear and disconnector engage again. The flat short-reach trigger can't be used on the DA/SA. With the DA "removed" the remaining SA can be the same and will work with the flat trigger. P.S. There is a smith in W. Monroe, Mississsippi that modifies the sear and disconnector on the DA/SA and reduces the trigger reach around 1/4". The DA is WAAY better, The SA is truly great. Cajun Gun Works, posts as "Schmeky".