Smith & Alexander is an excellent company. i prefer arched MSH and used theirs on two kimbers.
Good service, good fit, although I did have to ream & smooth the trigger spring hole a bit because it was a little rough and tight.
I don't mean to hi-jack the thread as I'm in the market for an arched MSH for my Compact SS too.
Is it true that you don't have to remove the slide and the hammer and or strut to replace just the MSH?. I did a search on the very subject and got alittle confuse, some said use a rubber band wraps around the grip safety and remove the pin then slide the MSH out without doing anything else except make sure the gun is empty of-course, and others said remove slide, release trigger with the thumb holding the hammer then ease the hammer down then remove the pin and slide the MSH out!. Which way is easier ?. Help please.
The rubber band trick works great. That's the way I did mine. If you have a series 2 I'd recommend taking the slide off first. You may have to take a bit of material off the ears of your new MSH to allow the firing pin block push rod to retract into the frame when the grip safety is released. It is a lot easier to see and adjust with the slide off.
Drop the hammer to release some of the tension on the spring. It will still have some pressure on it, but will not "fly" anywhere when the pin is punched out. Removing the spring and cup from the old MSH and putting them into the new one is a different story. They are under a lot of pressure and the cap and spring will reach orbit if not restrained. Wear safety glasses.
I also wrap my hand around the grip, then use my thumb underneath the bottom edge of the MSH to relieve tension off the pin. It comes out a little easier that way. Then, I just push the MSH sort of into the frame using a table top to get the pin started for reinstallation.
Once the MSH is out, does it matter of what position of the pistol be?. Does it have to be in certain position like stay up right or lay on it side so nothing else unseen can fall out of places or it's doesn't matter as long as don't drop it.
Doesn't matter. When you go to reassemble, hold the grip safety and remove the rubber band. You'll need to slightly loosen the pressure so the hammer strut can align itself with the mainspring cap.
An easy way to get the mainspring assembly out is to pound a finish nail into a piece of wood, leaving about 1/2" sticking out. Press the MS cap onto the nail, and push out the pin. It only takes two hands that way. If you hold it in a vise, it's easy too.