Yes & no, as Moosh89 says above, only the Perk Card - Paint it Black - allows painting an X on a target - u can toggle an "aim assist" which will increase your accuracy but it is only a slight help & we are left to manually aim our weapons down the sights - take aim & pause slightly to allow aim assist to work then shoot & your accuracy will be improved but you have to toggle aim assist on in your settings [IIRC]