Re: M110 Build
A little over a year ago I was in the exact same boat as you. I had an lmt mws that I wanted to run the kac m110 can on, and even found out that gap had a gas block that would work on my mws. However after posting several threads I decided that was not the way to go and that for my needs a surefire 762ss would be more along the lines of what I wanted.
Like you I wanted the reflex style can, and most important to me was lack of poi shift. Now that I have finally been approved I can say I am extremely happy with my decision.
A couple pics to show what I ended up with.
Rifle with suppressor and my old nf f1:
Current setup with leupold scope showing the reflex muzzle brake mount:
7 rounds unsuppressed, 100yds 6.5cm
The other 3 rounds suppressed to check shift:
I know 3 rounds isn't exactly what folks here on the hide prefer, but shooting groups is not what I like to do. I have since verified that same shift multiple times on steel out to 715yds.