Just put a CASV-EL on one of my M4’s. I would like to put a Knight 200/600 BUIS sight on. Is there anything I need to know. I left the rifles front sight as stock and noted that my optic now rides higher.
Hmm there seems to be a problem, this CASV has a top rail that runs almost the entire length “front to back” to say, one slot on the pictinny" last one to the rear" on the upper receiver rail.
If the Knight BUIS is less then the width of a individual rail then it could work. OR can it actually be attached to the flat piece which the charging handle slides into.