Just recenly bought one and have a PLHV2 on the way for it.  Going to use a flat arisaka mount on the right side and need to figure out what switch to use.  I am waiting on stamp to SBC the gun and was going to run a fore grip on it.  So I thought I could use a unity mlok hot button on it.  However I was someone post on the eye that it wouldn’t work on the single mlok opening.  The double mlok on the hand guard above I don’t believe has enough room to mount the button without it extending up above the hand guard.  Thought about the picatinny one but think by the time I add the rail then the button it will be way too far out and a shitty reach to get to.  
So what have y’all done as far as light set ups?

Use a standard mod button and mount it on a pic section above one of the slots.  That will work.  I have a smaller pic section in bound so we will see if that works.
That's how I have my current mod button set up.  Give me a few and ill get a picture up later this evening.

I'm still playing with my setups so the setup I post a picture of is not yet finalized. :)

Please post pics.  I’m not getting it.  I am using a fore grip and hitting a pad on top of the gun is going to be hard.  I am a righty so I have the light on the left to activate with thumb but needs to be on the right side of the gun so I can tackle the sling issue next.

Its not ideal but its what i'm currently running.

I'm still trying to figure out a better setup.  There's so little room on these things lol.

Ok.  Mine is the compact.  I am using the sling attachment on the left side of the gun on a pic rail.  I have a foregrip also.  My only option I see at this point is on the top rail.  If I mount behind the front sight it is too far back to reach, and if I could I would get smacked with the charging handle if I fired wile running the light.  May have to lose the buis.  Hate to do it but just don’t see another way.