At 15.4 ozs. and 5.6" in length, the Primary Arms 3X Compact Prism riflescope includes a five-slot section of Picatinny rail for the installation of an additional unmagnified optic. The scope’s illuminated, glass-etched ACSS (Advanced Combined Sighting System) reticle provides markers for bullet drop compensation, range estimation, wind correction holds and moving target leads for either the 5.56 NATO or 7.62x39 mm/.300 Blackout chamberings. Price: $260. Contact: Primary Arms; (713) 344-9600; primaryarms.com.