Combine barbecue marinade ingredients in a small bowl and whisk until combined. Place the steak into a sealable bag and add in marinade. Massage the bag until Steak is fully coated in the marinade. Lay bag flat in the refrigerator for at least an hour, or overnight.
Remove steak from marinade and discard remaining marinade. Heat grill to medium-high. Place steak on the grill and cook until optimal doneness. For medium rare (145°F) to medium (160°F) doneness, cook about 4 to 6 minutes, flip once and continue cooking for an additional 3 to 5 minutes. Keep in mind the internal temperature will continue to rise for a few minutes after coming off the grill.
Allow the meat to rest before slicing. Just five minutes will do the trick to lock in the tasty juices.
While resting meat, combine coleslaw ingredients in a mixing bowl and toss to coat evenly.
Thinly slice skirt steak. Slice open each slider roll. Top with steak strips, coleslaw and if desired, an extra drizzle of your favorite barbecue sauce.