Harmonic Barrel Tuner Eagle Vision Universal - Black

With this Eagle Vision Universal – Black Harmonic barrel tuner you can finely tune the barrel of your rifle to the ammunition you’ll be using. You can use this tuner to correct for the oscillating motions in a barrel. By adjusting that frequency, you can significantly improve the accuracy of your air rifle. Before, you’d only be able to do so by experimenting with the velocity of your ammunition, but it can now be done by simply tuning your barrel with this Universal Harmonic barrel tuner by Eagle Vision.

Tuning your barrel is a process of trial and error. After mounting the barrel tuner onto the barrel, you’ll have to shoot a group. Adjust the tuner slightly and shoot another group. Repeat that process until you’ve cycled through all of the barrel tuner’s settings. The setting that allowed you to shoot the tightest group can easily be found again thanks to the clearly visible markings on the Eagle Vision Universal – Black Harmonic barrel tuner. The optimal setting can and will differ per pellet or slug, so it's very important to shoot new test groups whenever you switch calibres.

The Eagle Vision Universal – Black Harmonic barrel tuner will fit nearly any air rifle with an external ½ UNF thread. It comes supplied with four end caps with a ½ UNF, M14X1.25, M20X1 or M18X1 thread and eight calibre adapters. These calibre adapters are suited for .177, .22, .25 and .30 calibres. The first set of calibre adapters features no thread and the second set features an additional ½ UNF thread, to which a moderator can be attached.