Preheat the oven to 375 degrees and line a baking sheet with parchment paper.
In a large bowl, combine the ground beef, ground pork, breadcrumbs, egg, onion, 2 tablespoons BBQ sauce, smoked paprika, salt, and pepper. Mix gently until the ingredients are evenly distributed.
Divide the mixture into 8 equal portions and shape each into a small oval loaf about 3 inches long. Place the loaves on the prepared baking sheet.
Brush the tops of the meatloaf sliders with 2 tablespoons of the remaining BBQ sauce. Bake for 20 minutes.
Remove the baking sheet, brush with the final 2 tablespoons of BBQ sauce, and return to the oven for 10 more minutes until the internal temperature reaches 160 degrees.
While the meatloaves bake, make the coleslaw. In a medium bowl, stir together the shredded cabbage, shredded carrot, mayonnaise, apple cider vinegar, and sugar until well coated. Set aside.
Split the slider buns and place one meatloaf slider on each bottom half. Add a spoonful of coleslaw, then close with the top bun.