Featured product at Diamond Back Tactical... "Less than 3 meters to beyond 300 meters; this is the normal engagement distance that can be expected in urban combat. For CQB, it’s hard to beat a dot sight. For longer range, precision shots, 4x optical sights are the ticket on an M-4 carbine. The Swarovski PV I 1.25-4x24 is the instrument that will give you the best of worlds.
