Primos Hunting Power Mule Deer & Blacktail Game Calls. This Game Call by Primos Hunting reproduces throaty grunts and Estrus Bleats with a simple inhale-exhale operation. The Primos Hunting Power Mule Deer and Blacktail Dual-reed Grunter is perfect for mule deer and blacktail deer especially during the rut. The Primos Hunting Power Mule Deer & Blacktail Grunter w/ Built-in Compass will serve you well on the hunt. Specifications for Primos Hunting Power Mule Deer & Blacktail Game Call: Manufacturer: Primos Hunting Species: Deer Features of Primos Hunting Power Mule Deer & Blacktail Game Call Perfect for Mule Deer and Blacktail Grunts and Estrus Bleats Effective for long-range calling Dual-reed assembly for inhale-exhale operation Reproduces throaty grunts and Estrus Bleats by simply inhaling and exhaling Package Contents: Primos Hunting Power Mule Deer & Blacktail Game Call Built-In Compass Primos Hunting 736: Power Mule Deer & Blacktail Game Calls