Count this craft in tech trash, not HQM. A crafted sight stays a sight, and what it buys is a clean dot at the range where iron sights give up and a scope is too much.
So put it on the gun that sprays or taps at mid range: the assault rifle first, then an SKS. On a bolt it takes the place an 8x scope should have, and that rifle wants real zoom.
One sight can serve several guns. Before you craft a second, pull the first off the rifle that stays home and put it on the one heading out for a roam. A second holosight only pays once two of you fight at range at the same time.