Pour in the tequila, margarita mix, orange juice and sugar.
Mix until the ice is all chopped.
Place 2 lime slices into each popsicle mold and pour the margarita mixture into each cold pop mold, up to the top. Sprinkle with margarita salt and insert the top/stick in.
Freeze overnight or at least for 6 hours.
Run warm water over the frozen molds and gently release each margarita pop from its mold.