With the hammer cocked it's Single action .
How the trigger comes out all depends on how the gun was to start with.
don't expect a 1911 smooth trigger I doubt it's going to happen.
Cajun will even tell you that if they worked on 10 - po9's, 7 would usually turn out really good, 2 pretty good and 1 not so good.
Don't polish to the point of removing machine marks on any internal parts , that's not good. 🤬 Believe me , I know ,
I did it myself , and threw off the timing.. luckily Cajun sent me a couple of parts to fix the problem.
Only polish to shine.