Budget model but same quality as other modles - Aimpoint ACO 2 MOA Red Dot Sight

This is basically the POR w/o the lens covers and a mount you need a socket to install. The mount is as sturdy as most will ever need. Is is also sleeker. The PRO has a big knob that sticks out on the side and snags on things. I mounted it on a Tavar SAR that is my 24/7 "house gun". Thus, have no need for lens covers. A very good value at any price. Battery life, at just over a year, is only slight issue. But easy to get over for the price.