Huma-Air MOD50-4/0 FX Impact Hornet Modulair Moderator Set
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Huma-Air Modulair Airgun Moderator MOD50 FX Impact Hornet set. To convert your FX Impact with 500 mm barrel in a mean looking compact rifle. For Impact MKI and MKII

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Huma-Air MOD50-4/0 FX Impact Hornet Modulair Moderator Set

Convert your FX Impact with 500 mm barrel, simple and easy, into a mean looking compact rifle with our Mod50 FX Impact Hornet Modulair Moderator System and the FX Dreamline compact air cylinder

This silencer, or moderator is the largest in diameter (50 MM) in the range of Huma-Air modular air moderators. It consists of an extra long start chamber with vent holes to dissipate the excessive air from the muzzle blast and a special blow back module what screws on to the treaded part of the barrel of the FX Impact.
The moderator will slide over the barrel for about 100 mm what will give your FX impact it's mean and compact looks.
This set comes with a set of 2 trigger guard spacers made of a technical polymer, a delrin barrel guide nut to center the barrel into the moderator and a smaller diameter, black anodizied aluminum knurled power adjuster to fit in between the barrel and the FX Dreamline Compact Air Cylinder (cylinder is not included)

To complete this build you would need an orginal FX Dreamline Compact Air Cylinder what can be found here
(To get an even meaner look, you can even use the Saber Tactical double cylinder adapter to fit 2 dreamline compact air cylinders to your setup)

The moderator itself has a startpiece, a 40 mm blow back volume chamber, two extra 40 mm long volume chambers and an endcap. Three of the these four chambers are filled with wired metal inserts wrapped with our special Kevlar ® enforced ballistic fibers to minimize the sound. Despite the large dimensions of this moderator we succeeded to keep to weight extremely low with just above 300 gram.
Optionally you can add or remove volume chambers with different length, volume and internals.
By mixing these variables you can influence the frequency and output decibels of your silencer and adjust them perfectly matching your rifle.

This set is compatible with the FX Impact MKI and MKII with 500 mm barrel up to caliber .25. No modifications to the rifle need to be done. 
Large calibers are available on demand, please email us at 


The benefits of the Huma-Air MOD50-4/0 FX Impact Hornet Modulair Moderator Set:


  • The possibility to make the silencer rifle specific, will allow you to reduce the output noice to an absolute minimum.
  • The precision machined volume chambers are screwed into each other making it very easy to switch or change the setup.
  • You can ad or remove 40 mm long volume chambers to the setup.
  • The internal parts of the 40 mm chambers consist of a metal wired sleeve with Kevlar (aramid) enforced ballistic fibers around it to reduce the sound.
  • You can also choose to use maximum volume, without the standard inserts in the volume chambers.
  • This special Huma-Air Mod50 4/0 FX Impact "Hornet" model was designed to be used for Cal .177,  .22 or .25. 


Material  Aircraft Aluminium
Number of 40 mm chambers  Startpiece + 1x blowback module + 2x 40 mm modules
Number of 20 mm chambers  0
Weight  ca. 311 Gram.
Lenght  220 mm.
Diameter (Outside)  50 mm.
Tread size  M18x1 (fitted with delrin barrel guidance nut)
Finish  Satin black anodizided




We use tracked priority shipping for this item. We can ship these pneumatic parts seperately packed for safe and undamaged arrival in the country of destination.
As the purchasing party you are responsible for checking that this product is legal according to your local laws and regulations. We ship on your behalf and therefore Huma-Air can not be held responsible for any legal issues in the country of the recipient.




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Angel Cruz Ortiz - 24-09-2021 22:51

I got my Stinger kit a couple weeks ago and I love this thing. My Impact now measures 28 inches and this thing is going to be a pleasure to carry in the woods. I got it paired with the Altaros slugs in .25 cal and I can put 5 slugs in a 3/8 of an inch hole at 50 yards. And on top of that it takes the bark out of the Impact. Will be getting one in .30 cal as well.

Angel V Cruz Ortiz - 23-09-2021 20:10

I got mine last month and I love it. This thing is very quiet and does not affect the accuracy of the gun. Using the Altaros slugs in .25 cal I can do 3/8 of an inch hole all day long at 50 yards. But the best part is how small it makes my Impact. This thing is going to be a pleasure walking the woods

Tuan - 11-09-2021 23:04

Received my hornets package and was fairly easy to install. However since you’re removing the valve adjuster you need to retune your rifle after. The hornet package makes my fx impact sleek and very nice and compact. I love it!

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