Rocky Mountain Herd Master Diaphragm Call for Elk HuntingRocky MTN Hunting Calls Herd Master Diaphragm Call The Rocky Mountain Herd Master Diaphragm Call is an essential tool for serious elk hunters seeking realistic sound reproduction. Built on the largest frame in its class, this call enables hunters to produce a wide range of sounds, including satellite bull bugles, cow mews, and chirps, helping to attract and communicate with elk effectively. Its design ensures a comfortable fit by sitting further