Skip to main content Skip to search Skip to main navigation

$10 OFF FIRST ORDER "WELCOME10"

Free Shipping Logo

Free Shipping on Airguns Over $1000!

Reviews Logo

500+ Reviews

Expert Service Logo

Expert Tuning & Repair

Years in Business Logo

10+ Years in Business

Free Shipping Logo

Free Shipping on Airguns Over $1000!

Reviews Logo

500+ Reviews

Expert Service Logo

Expert Tuning & Repair

Years in Business Logo

10+ Years in Business

Shopping cart
Shopping cart

DonnyFL Benjamin .357 Bulldog M18x1 Adapter

Barrel-Aligned. CNC Precision. LDC Ready for Big Game.

The DonnyFL Benjamin .357 Bulldog M18x1 Adapter is a purpose-engineered moderator adapter that slides over the barrel bushing for precise barrel alignment with the adapter's exit hole — ensuring accurate, clipping-free LDC use on the .357 Benjamin Bulldog platform. CNC machined for precision, matte black anodized, and incredibly easy to install without removing the shroud.

Overview

The .357 Benjamin Bulldog is becoming increasingly popular for big game hunting — and this adapter transforms it into the ultimate hunting airgun when paired with a DonnyFL .357 Ronin or .357 Emperor moderator. The barrel bushing (already factory-installed on the gun) is not included and does not need to be removed. Simply remove the two screws securing the front cap, swap in the adapter while pressing it flush with the shroud, reinstall the screws, and you're done.

Key Features

  • Slides over factory barrel bushing for precise barrel alignment
  • CNC machined for accuracy
  • Matte black anodized finish
  • Knurled thread protector included
  • Easy installation — no shroud removal required
  • M18x1 thread output for big bore moderator compatibility
  • Compatible with DonnyFL .357 Ronin and .357 Emperor

Installation Instructions

  1. Remove the top and bottom screws securing the front cap
  2. Swap out the front cap for this adapter
  3. Press the adapter into the shroud as you tighten the two screws — ensures flush fit
  4. Reinstall and tighten the two screws
  5. Done — no shroud removal required

Recommended Pairings

  • DonnyFL .357 Ronin — minimum recommended moderator for this platform
  • DonnyFL .357 Emperor — maximum sound reduction option


⚠️ The FX .357 suppressor is not sufficient to quiet this gun — use at minimum the DonnyFL .357 Ronin.

 ⚠️ If using the Emperor, do not add the extender tube — excessive weight on the adapter may cause inaccuracies.

 ⚠️ Barrel bushing not included — factory gun already has the bushing installed.

Specifications

Standard Specification From Factory

Manufacturer DonnyFL
Shopping cart

DonnyFL Benjamin .357 Bulldog M18x1 Adapter

Barrel-Aligned. CNC Precision. LDC Ready for Big Game.

The DonnyFL Benjamin .357 Bulldog M18x1 Adapter is a purpose-engineered moderator adapter that slides over the barrel bushing for precise barrel alignment with the adapter's exit hole — ensuring accurate, clipping-free LDC use on the .357 Benjamin Bulldog platform. CNC machined for precision, matte black anodized, and incredibly easy to install without removing the shroud.

Overview

The .357 Benjamin Bulldog is becoming increasingly popular for big game hunting — and this adapter transforms it into the ultimate hunting airgun when paired with a DonnyFL .357 Ronin or .357 Emperor moderator. The barrel bushing (already factory-installed on the gun) is not included and does not need to be removed. Simply remove the two screws securing the front cap, swap in the adapter while pressing it flush with the shroud, reinstall the screws, and you're done.

Key Features

  • Slides over factory barrel bushing for precise barrel alignment
  • CNC machined for accuracy
  • Matte black anodized finish
  • Knurled thread protector included
  • Easy installation — no shroud removal required
  • M18x1 thread output for big bore moderator compatibility
  • Compatible with DonnyFL .357 Ronin and .357 Emperor

Installation Instructions

  1. Remove the top and bottom screws securing the front cap
  2. Swap out the front cap for this adapter
  3. Press the adapter into the shroud as you tighten the two screws — ensures flush fit
  4. Reinstall and tighten the two screws
  5. Done — no shroud removal required

Recommended Pairings

  • DonnyFL .357 Ronin — minimum recommended moderator for this platform
  • DonnyFL .357 Emperor — maximum sound reduction option


⚠️ The FX .357 suppressor is not sufficient to quiet this gun — use at minimum the DonnyFL .357 Ronin.

 ⚠️ If using the Emperor, do not add the extender tube — excessive weight on the adapter may cause inaccuracies.

 ⚠️ Barrel bushing not included — factory gun already has the bushing installed.

Specifications

Standard Specification From Factory

Manufacturer DonnyFL
Shopping cart

0 of 0 reviews

Average rating of 0 out of 5 stars

Leave a review!

Share your experiences with other customers.