The Terminator Elk System was made for accurate and easy to duplicate elk sounds. The Terminator can be used with any of our elk mouth diaphragm calls but it especially works well with our Sound Plate calls. It is excellent for bull elk glunking! This is the state-of-the-art design for reproducing accurate elk resonance and tone! Learn how to use the Primos Terminator bugle tube. This bugle tube has been around for a long time and that s because of the great results it consistently produces. Don t forget the Terminator is LOUD!