Yes. MSH. I can't stand my arched housing and will be switching it out soon to a flat MSH.MSH only on mine only because my other 1911's have that other wise I would have left it alone. Shoots well.
This is what I did with mine. It's been 100% reliable and more accurate than me. After 500 rounds or so I knew what I wanted to do to make it right for me.Don't replace anything major until you shoot it. A lot. It is fully capable of 25 yd 2"-3" groups out of the box if you do your part.
Once you break it in after a few hundred rounds, the trigger will be smoothed out, and it should function flawlessly just as it is.
At that point you will be able to determine what changes you might want to make.