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Preheat oven to 450 degrees. Coat a large rimmed baking sheet with olive oil and set aside.
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Place pork, salt, peppers, pickling liquid, bread, and eggs in a large bowl; using your hands, mix until well combined. Form pork mixture into firmly packed 2-inch meatballs. Place on prepared baking sheet and arrange the meatballs in rows so that they are touching on all sides.
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Transfer to oven and roast until cooked through, about 14 to 20 minutes. Let meatballs cool for 5 minutes on baking sheet before removing.
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Meanwhile, heat meat sauce in a large saucepan over medium-high heat. Add cooked meatballs to sauce; cook until sauce and meatballs are heated through. Place 1 meatball on bottom half of each slider bun and top with 1 tablespoon meat sauce. Sandwich with top half of bun and secure with a toothpick; serve.
