3 Legged Thing  |  SKU: MDF-EXT

The ModFather Extension Tube with connector

Regular price £5999 GBP

Refined volume. Precision machining. Elevated silence.

The Modfather Extension Tube is a beautifully crafted modular expansion for the Modfather system, designed to increase internal volume and further refine airflow management for enhanced sound suppression.

Machined with the same care and intent as the Modfather itself, the extension integrates seamlessly into the system, adding an additional chamber that gives expanding air more space to slow, stabilise, and dissipate before it exits the muzzle.

It’s a subtle addition with a meaningful impact.

Delivery and Shipping

Delivery

For most UK addresses, orders are sent via Royal Mail First Class or DPD for larger or heavier items.

Delivery typically takes 1-5 working days, depending on the service used. Many orders placed before 12 noon arrive the next working day (Monday-Friday).

Orders over £50 qualify for free shipping to most UK addresses.This excludes shooting products that require Royal Mail 18+ Signed-for Delivery.

Remote Locations (Highlands, Islands & Northern Ireland)

Deliveries to Scottish Highlands, offshore islands, and Northern Ireland may require alternative courier services due to higher delivery costs in these regions.

Small parcels under 350g are sent via Royal Mail and qualify for free shipping if the order value is over £50.

Larger or heavier items are shipped via UPS, and shipping charges will be calculated at checkout, but in most cases it will cost £9.99.

Delivery typically takes 2-5 working days, depending on the service used.

Returns

If you are not satisfied with your purchase, we have a 30-day returns period. In the first instance, please contact our support team via email: support@3leggedthing.com

Royal Mail Deliveries

All orders placed via this website are processed as business-to-consumer (B2C) eCommerce transactions. If you are a business customer requiring business-to-business (B2B) purchasing, please contact us directly prior to ordering.

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Description

Combined Capacity

  • Modfather alone: 0.09 litres
  • Modfather + Extension: 0.13 litres

That increase in volume delivers smoother airflow and noticeably improved sound reduction, particularly in noise-sensitive environments.


Engineered Acoustic Control

The extension tube houses a single high-density acoustic foam cylinder, using the same studio-grade material found in recording studios and radio stations.

With a density of 24kg per cubic metre, the foam is designed to absorb and diffuse sound energy efficiently. It is user-washable when lead particulate build-up requires maintenance, ensuring long-term, consistent performance.


Integrated Modular Design

The Modfather Extension Tube is supplied as a complete, ready-to-configure module, including:

  • Tube connector
  • Anodised endoskeleton
  • Inner Cage
  • Studio-grade acoustic foam insert

It can be:

  • Added to a Modfather to extend the system
  • Mounted at the barrel end or muzzle end
  • Used independently as a compact moderator(Requires caps from Modfather)

The system adapts to your rifle, your environment, and your priorities.


Design & Finish

The extension tube features a clean, purposeful exterior, precision-machined for strength, alignment, and visual harmony with the Modfather range.

Finished exclusively in our unique darkness black, it delivers a restrained, engineered aesthetic that complements any Modfather configuration while keeping the focus on performance and craftsmanship.

Specifications

  • Material
    Aerospace-grade Magnesium Alloy
  • Specs
    • Length: 12cm/4.7"
    • Diameter: 45mm/1.77"
    • Capacity: 92ml/3.2floz
    • Weight: 222g/7.8oz

The Features:

  • Adds 0.038 litres of internal volume
  • Increases total system capacity to 0.13 litres
  • Single-chamber airflow expansion
  • Studio-grade, washable acoustic foam
  • Precision-machined construction
  • Seamless integration with the Modfather system
  • Modular mounting options

What's in the box?


Modfather Extention Tube:

  • Connector
  • Inner Cage
  • Foam Insert
  • Slotted Exoskeleton

Your feedback fuels our designs

We design and engineer all of our products in the United Kingdom, and seek ways to innovate in order to create products that photographers love and want to use in their daily workflows.