Duck Commander The Mule Duck Call Double Reed Wood/Poly Brown/Green DCMULE The Mule Is Part Of The Gunning Series. This Call Has a Combo Of a Wooden Barrel With a Polycarbonate Insert Giving It a Unique Raspy Tone. The Mule Is Easy To Blow And Maintain. The Mule offers a softer Tone Than Pure Acrylic. It Is a Double-Reed, Friction-Fit System. Type: Double Reed Species: Mallard Hens Material: Polycarbonate/Wood Sound Species: Ducks Electronic: No Battery: None Color: Green/Brown Style: Hand Calls: Ducks