Preheat grill to medium-high.
Stir honey, Sriracha, ginger, garlic and salt together in a large bowl. Add shrimp and toss to coat. Let stand at room temperature for 10 minutes.
Thread the shrimp onto 4 metal skewers. Grill, turning once, until lightly charred and cooked through, 4 to 6 minutes total. Sprinkle with scallion and serve with lime wedges on the side, if desired.
Hot honey is honey infused with chiles that give it a subtle kick. Look for it online or in well-stocked supermarkets or make your own by combining honey with hot sauce or a pinch of cayenne.