You would need an adapter to add a picatinny rail on top of your carry handle, which would put the optic up pretty high. Yes you could do it with an adapter such as this: NC-WPM-AB48T-MAR6M2
Yes it will. This is directly from the user guide " In order to mount to an AR carry handle you must first remove the Picatinny Rail Mounting Bracket. This is attached to the sight body by two screws on the underside of the mount. Since these screws were installed using a medium-strength but non-permanent thread locker, they will be harder than normal to remove. Once the sight is free of the mount, locate the sight base in the handle channel such that it will accept the thumb-screw provided with the sight and insert from below. Finger-tight is most often sufficient, but holes in the knurled knob are provided to allow additional tightening with a small rod."
Yes. (It’s pretty apparent that it is mountable on a Carry Handle-much like an ACOG’s mount that has a hole that allows you to use the iron sights) If you remove the rail mount, you’ll be able to directly attach it to your Carry Handle.