Grilled Cuban Bunini Sandwich

Name: Grilled Cuban Bunini Sandwich
Ingredients: 4 Ball Park® Hamburger Buns; Dijon mustard; 12 slices dill pickle; 1/2 cup sliced red onion; Cuban pulled pork (recipe below); 8 slices Black Forest ham; 8 slices Swiss cheese; olive oil; Cuban Pulled Pork:; 1 tablespoon kosher salt; 1/2 teaspoon garlic powder; 1/2 teaspoon onion powder; 2 teaspoons ground cumin; 2 teaspoons dried oregano; 1 teaspoon crushed red pepper; 1 teaspoon whole black peppercorns; 1 bay leaf; 1 orange, zested and juiced; 1 lime, zested and juiced; 1 yellow onion, sliced; 5 whole garlic cloves, peeled; 3 pounds pork shoulder