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DonnyFL Fatboy 2.0 Sound Moderator 108x50.8mm 1/2 UNF

Model: S75A

Condition New

The iconic Multi-caliber DonnyFL Fatboy is back and better than ever.

In the 2.0 edition, this compact powerhouse receives a complete exterior redesign while keeping the unmistakable character of the original.

With a new shell, improved ergonomics, and support for interchangeable calibers from 4.5 mm to 7.62 mm, the Fatboy is ideal for shooters who want a short, efficient, and highly capable moderator.

Despite its size, its sound‑reduction performance is genuinely impressive.

Compatibility: 1/2 UNF Included Air Strippers Caliber: .177-.22 , .22-.25 , .25-.30

DonnyFL - When silence is a priority.

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The Fatboy moderator from DonnyFL is compact, wide-bodied and highly effective.

Its large internal chambers, combined with sound‑dampening materials, absorb a significant amount of noise and greatly reduce the muzzle blast of your airgun.

It is compatible with calibers from 4.5 mm up to 7.62 mm.

DonnyFL includes three interchangeable air strippers (.177-.22 , .22-.25 , .25-.30), ensuring each caliber has minimal air escape at the front for optimal performance.

The rear cap with 1/2 x 20 UNF thread has been redesigned to offer better grip, making installation easier and more secure.

An optional extender can be added to the Fatboy to increase internal volume and further reduce the sound signature of your air rifle.

Why Choose DonnyFL?

Precision engineering: All components are CNC‑machined to tight tolerances for consistent performance.

Advanced design: Internal architecture is optimized for maximum suppression in a compact form.

High durability: Built from premium materials with robust finishes for long service life.

Trusted brand: Known for reliability, quality control and strong customer support.

Caliber range

Compatible with calibers from 4.5 mm (.177) up to 7.62 mm (.30).

Interchangeable air strippers

Includes three removable air strippers for tuning and versatility.

Redesigned rear cap

Updated 1/2 x 20 rear cap with improved grip for easier installation.

Expandable system

Can be paired with the 159 mm extender for increased sound suppression.

Compact dimensions

Length 108 mm and diameter 51 mm.

Lightweight build

Weighs only 190 g for excellent balance on the rifle.

Compatibilty

Fits 1/2 UNF

What is an Air Gun Moderator

An air rifle moderator is a noise suppression device attached to the gun's muzzle. It creates a barrier to redirect air, reducing noise. Unlike firearm suppressors, which fully silence guns and are highly regulated, moderators only moderate sound and are designed specifically for air guns.

Do Moderators Affect the Accuracy of the Air Gun?

Contrary to popular belief, moderators do not affect rifle accuracy; they actually enhance it by reducing recoil, which minimizes arm jerking after a shot. The weight of a moderator is negligible and does not impact the rifle's handling. Heavier rifles, in general, are easier to shoot accurately.

For those seeking to enhance the usability or precision of their airguns, this accessory is an excellent choice.