Pricey, but it's a leupold - Leupold LCO Carbine Optic Red Dot Matte 1 MOA Dot

For me there isn't a better guarantee in the industry than the one offered by Leupold.There optics are clear and crisp, as good or better than any on the market. When you consider there made in the USA by American workers that still take pride in them selves and the work they do, even at the price it's still the best deal out there. Thank you Leupold.