Whenever Coercive Recruiter or another Pirate enters the battlefield under your control, gain control of target creature until end of turn. Untap that creature. Until end of turn, it gains haste and becomes a Pirate in addition to its other types.
Coercive Recruiter's ability can target any creature, even one that's untapped or one you already control. It can even target itself or the creature that caused the ability to trigger.
Gaining control of a creature doesn't cause you to gain control of any Auras or Equipment attached to it.