I don't think it would be worthwhile. I you are concerned about quick aquisition, get a HOLO sight or a red-dot type sight. If you want to maintain iron sights, the stock irons will work well. Remember that an AR15/M16/M4 was made to engage human size targets out to and beyond 350 meters (which it does very well). If I had a battle rifle that was going to ride in the truck or take any abuse I would stick with iron sights, you should never have to use an AR15 past 350 meters, even if you do, they will work better than anything this side of a scope (except in low light conditions, then you might want to purchase ANPVS-7s). Stick to the iron sights.