Foxpro SMOKINGGUN Smoking Gun Howler Diaphragm Call Double Reed Attracts Coyotes White The Smokin' Gun howler from FOXPRO is a two-reed, regular frame design that offers a general array of coyote vocalizations. This mouth call is easy to use and has great volume capabilities. The Smokin' Gun howler creates a variety of standard coyote vocalizations such as howls, barks, distress, yips, chirps, whimpers, and challenges.