Harmonic Barrel Tuner Eagle Vision Universal - Silver

During each shot, the barrel of your air rifle vibrates at a certain frequency. The Eagle Vision Universal – Silver Harmonic barrel tuner lets you fine-tune precisely that movement, calibrated to the ammunition you use. Adjust the frequency, and you'll notice a significant improvement in accuracy. Previously, this had to be done by experimenting with projectile velocity; with this Universal Harmonic barrel tuner from Eagle Vision, you tune the barrel itself instead. For sport shooters looking to tighten their groups, that's a practical solution.

Adjustment is all about trial and error. You mount the tuner on the barrel and shoot a group, move the tuner one position and shoot again, and so on until you've tested all positions. Which position gave you the tightest group is easy to see thanks to the clear markings on the Eagle Vision Universal – Silver Harmonic barrel tuner. Keep in mind that the best position varies depending on the pellet or slug: if you switch to a different caliber, shoot a few test groups again.

Nearly any air rifle with external ½ UNF threads will accept this tuner. The set includes four end caps — with ½ UNF, M14X1.25, M20X1 and M18X1 threads — plus eight caliber adapters for .177, .22, .25 and .30. One set of adapters has no threads, while the other set features ½ UNF threads on which you can mount a silencer.