Whisk together all ingredients for shrimp marinade in mixing bowl.
Place shrimp in a gallon sized sealable plastic bag and pour marinade over shrimp. Ensure shrimp is evenly coated, force air out of bag and seal. Place on a plate and put in refrigerator for 30 minutes to two hours.
Light grill and set up for direct high heat. Place small oven safe sauce pan on grill over indirect heat and add butter and garlic.
While grill preheats, skewer shrimp onto 12” wooden skewers.
Place shrimp directly over heat and grill for about two minutes, flip and grill an additional two minutes.
Remove from grill, baste with melted butter and garlic and garnish with chopped parsley.
