Luckily, there are plenty of options - anything with the “Reflex” name counts - which offer different sight pictures and reticles for your viewing pleasure. Remember to Equip a Reflex Optic. Those kills will not count unless you use an attachment slot on a Reflex Optic.Here are my tips for breezing through this challenge: When I wasn’t appreciating some competitive Call of Duty and cheeseburgers in the Land of 10,000 Lakes, I was on Modern Warfare unlocking its newest weapon: The Crossbow.īefore you can experience the Crossbow, however, you must first complete a challenge: get five kills with a marksman rifle that has a Reflex Optic in 25 different matches.