Bartender's Margarita

1 1/2 oz Cuervo premium or Gold tequila
3/4 oz Triple sec
3 oz Sweet and sour (FRESH lemon juice with equal parts simple syrup)
Juice of 1/2 Lime
Float Grand Marnier
Splash Cranberry juice

Shake tequila, triple sec, sweet & sour, cranberry juice, and lime juice in a pint glass. Rim another pint glass with salt and transfer contents. Float the Gran Marnier, garnish with a lime and straw, and serve.