Sometime, it's not working as intend. Like i step into a room and kill 2-3 guys around me with it's tracking ability, but sometime same range when i spot few guys and jump up and aim to the guy in the middle between all of them, my BB not tracking any more and just shooting all knife to my face direction to no where. Sometime i get killed from BB of the guy so far away. He's silhouette on my Bygone scope it's just big as my red dot. (Bygone red dot it's quite big ^ but it's still ridiculous far @@)