FX Integrated Harmonic Barrel Tuner & FX Carbon Fiber Barrel Liner Sleeves

FX Integrated Harmonic Barrel Tuner Shroud

Adjustable Barrel Tuner and Dampening Shroud

The one accessory that will have the biggest impact on the airgunning industry, is the new FX Integrated Harmonic Barrel Tuner. This integrated shroud system offers new features that will change your tuning process and give you a level of precision control never before available to an airgun.

The FX Integrated Harmonic Barrel Tuner offers both dampening and tuning features that will have you gain new heights of accuracy from your FX Airgun. FX Airguns teamed up with Chris Turek of UpNorth Airgunner to bring this exciting technology to the FX Airgun.

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The science behind barrel harmonics and internal ballistics has been debated and analyzed for years. Though there are still unknowns, what is known is that barrel harmonics exist in all guns from a .177 break barrel airgun, all the way up to a .50 caliber Barret. These barrel harmonics are observable and are now adjustable for repeatability. This is the true art of barrel tuning.

The specially designed shroud of the Harmonic Barrel Tuner first works to dampen the barrel, making the harmonic signature of the barrel quieter, more subdued, and controllable. This, when combined with the new FX Carbon Fiber Liner Sleeve, also stiffen the barrel system which further lowers the barrel’s harmonic amplitude (or whip) throughout the entire shot cycle. Both of these factors combined, create tighter shot groups, but are only part of the overall barrel tunning that this FX system brings.

The finishing touch is found in the integrated rotating running weight, located on the end of the shroud. Made from a specifically selected metallic alloy; this allows the running weight to have enough mass to affect the weight distribution of the overall barrel system. Shooters will find that even the smallest amount of rotating adjustment of the tuner weight by only a few thousands of an inch, can change how your gun shoots groups (especially when shooting medium to long range distances).

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The beauty and genius of the FX Integrated Harmonic Barrel Tuner is realized with the single variable testing and tuning found both with the shroud system and internally with the new FX Impact M3. This intersection of beauty (form) and precision (function) will forever take the sport of precision airguns to the next level.

FX Carbon Fiber Barrel Liner Sleeve

Tensions the Barrel While Reducing Vibrations

The new FX Carbon Fiber Barrel Sleeve is an effective and easy way to add rigidity and dampen the harmonic signature of any FX STX Barrel Liner, all in an effort to aid the endless quest of finding unmatched accuracy from your FX Airgun.

FX Airguns worked with famed Airgun Master Ernest Rowe in developing these liner sleeves. Many have been familiar with Ernest’s R&D work on the sleeves as he tested tolerance, material and fit to find the most effective accuracy aid. The result is a tailor fit carbon fiber liner that perfectly fits the FX STX Barrel Liners. The tolerances fit so well that no further adhesion is necessary to obtain the stiffness needed to aid accuracy.

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These Carbon Fiber Barrel Sleeves work hand in hand with the FX Integrated Harmonic Barrel Tuner in affecting change to the barrel harmonics from the outside in, aiding the best possible accuracy of your rifle.

The FX Integrated Harmonic Barrel Tuner will be offered in 600mm, 700mm & 800mm shroud lengths for both the Impact M3 as well as the FX Maverick. They will be available at FX dealers Summer of 2021. The Carbon Fiber Barrel Liner Sleeves will be available in calibers .177, .22, .25 & .30 in the various barrel lengths offered by FX Airguns. They will be available at FX dealers end of May 2021.

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Excellent! Looking forward to spend more money! :)
Two questions to FX USA: 1. How much weight does the tuner at the end add to the shroud? 2. Is the (now wider) barrel liner sleeve centered inside the shroud with the same type 3ea pacers used now?





Don't have the exact weight specs in front, but it's definitely got a little heft to it in order to effect the harmonic signature. Chris from UpNorth Airgunner might be able to chime in and explain it more.

As for the Carbon Fiber Barrel Liner Sleeve, no need for the o ring spaces, the shroud is speced out to fit very snug over the liner (so no need for gluing like the R&D liners Ernest came up with) and also the width matches the width of the inside of the STX barrel housing, so it replaces the need for o-rings. Hope that explanation helps!
 
Excellent! Looking forward to spend more money! :)
Two questions to FX USA: 1. How much weight does the tuner at the end add to the shroud? 2. Is the (now wider) barrel liner sleeve centered inside the shroud with the same type 3ea pacers used now?





Don't have the exact weight specs in front, but it's definitely got a little heft to it in order to effect the harmonic signature. Chris from UpNorth Airgunner might be able to chime in and explain it more.

As for the Carbon Fiber Barrel Liner Sleeve, no need for the o ring spaces, the shroud is speced out to fit very snug over the liner (so no need for gluing like the R&D liners Ernest came up with) and also the width matches the width of the inside of the STX barrel housing, so it replaces the need for o-rings. Hope that explanation helps!

Thank you for the quick answers. So the barrel liner with the carbon sleeve on it would fit inside the older 14mm OD barrel housings? What about the newer 28mm OD metal shrouds that had 3 spacers and the bare barrel liner inside? What would space the barrel liners with the carbon sleeve on those?

One more question: 
The new shroud lengths 600/700/800mm seem to be 100mm longer in each version from the previous 500/600/700mm lengths. Is that because of the tuner at the end? Does the tuner screw on the end of the original shroud or it comes with a new shroud and it is built on the shroud itself?
 
Excellent! Looking forward to spend more money! :)
Some questions to FX USA:

1. How much weight does the tuner at the end add to the shroud?

2. Is the (now wider) barrel liner sleeve centered inside the shroud with the same type 3ea pacers used now?






It only adds about 6 ounces to the overall barrel but the science behind it is that it only takes rotating the weight THOUSANDTHS of an inch to affect POI shift and finding the harmonic accuracy node for your chosen projectile and current velocity tune. Wait till I talk to you all about the theory of positive compensation barrel tuning - it will BLOW YOUR MIND! So much to cover in the coming weeks on this topic!
 
Excellent! Looking forward to spend more money! :)
Two questions to FX USA: 1. How much weight does the tuner at the end add to the shroud? 2. Is the (now wider) barrel liner sleeve centered inside the shroud with the same type 3ea pacers used now?





Don't have the exact weight specs in front, but it's definitely got a little heft to it in order to effect the harmonic signature. Chris from UpNorth Airgunner might be able to chime in and explain it more.

As for the Carbon Fiber Barrel Liner Sleeve, no need for the o ring spaces, the shroud is speced out to fit very snug over the liner (so no need for gluing like the R&D liners Ernest came up with) and also the width matches the width of the inside of the STX barrel housing, so it replaces the need for o-rings. Hope that explanation helps!

Thank you for the quick answers. So the barrel liner with the carbon sleeve on it would fit inside the older 14mm OD barrel housings? What about the newer 28mm OD metal shrouds that had 3 spacers and the bare barrel liner inside? What would space the barrel liners with the carbon sleeve on those?

One more question: 
The new shroud lengths 600/700/800mm seem to be 100mm longer in each version from the previous 500/600/700mm lengths. Is that because of the tuner at the end? Does the tuner screw on the end of the original shroud or it comes with a new shroud and it is built on the shroud itself?

The FX Integrated Harmonic Tuning Shroud is a full system approach to include not only the tuning weight built into the shroud which adds just a slight bit of length, but it also has dampening properties that we baked into the shroud as well. Pari this with the FX Carbon Fiber Sleeve and you are now TAMING and TUNING the barrel harmonics. 
 
Great jobs Chris and Ernest! Mine already has the liner CF sleeve glued on (it was very snug, probably didn't need to be glued), and the external 3mm thick CF sleeve over the 14mm barrel tube to lightly tension the barrel. I'm getting pretty much easy MOA at 100 yards with the Slug A liner and .25 NSA 43.5 grain slugs. 
 
That is also very nice, but do not fit on Maverick.

The moderator / crono are the accessory that get me most exited.


If you're referring to the Harmonic Barrel Tuner, we're absolutely going to have a version for the FX Maverick. The Maverick's shroud is just a little bit different length but after we roll out the FX Impact Harmonic Tuners, we'll bring them to the Maverick next. Not a big different in the two outside of the shroud length.
 
Sorry for the naive questions , but the purpose of the CF liner sleeve is to tightly wedge itself between the shroud and the barrel?

1. Why don't they just make a thicker barrel and eliminate the liner?

2. Is the space between shroud and barrel in anyway used as an air baffle to assist in noise reductions?

My sincere apologies if I'm way off the mark, just ordered an M3 Impact and curious to those new products.
 
Sorry for the naive questions , but the purpose of the CF liner sleeve is to tightly wedge itself between the shroud and the barrel?

1. Why don't they just make a thicker barrel and eliminate the liner?

2. Is the space between shroud and barrel in anyway used as an air baffle to assist in noise reductions?

My sincere apologies if I'm way off the mark, just ordered an M3 Impact and curious to those new products.

I'll take a shot at answering..

1. Defeats the design goals of the liner system. You can swap between different liners for different shooting purposes in just a couple if minutes (pellet liners, slug liners, STX, Superior, et al).

You can also re-use the sleeves for different calibers, so ling as you have the adapters for the given calibers. 


2. Not at all