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3 Legged Thing

Reservoir Mods XL – Precision Airgun Moderators

$12281 USD

The Reservoir Mod is a compact, modular airgun moderator engineered to do one thing exceptionally well: reduce muzzle noise without compromising accuracy.

Designed and built by 3 Legged Thing, Reservoir Mods use a carefully tuned multi-chamber system to manage airflow, strip excess pressure, and quiet the shot at the source. The result is a cleaner report, tighter follow-through, and a more controlled shooting experience.

Available in two profile styles and two lengths, every Reservoir Mod delivers the same internal performance — the choice is simply how it looks and how much volume you want.

Thread
Color:
Profile

Delivery and Shipping

NOW SHIPPING FROM OUR US WAREHOUSE. NO IMPORT DUTIES

We now ship orders from our US warehouse, so there will be no additional duties to pay.

Orders over $100 qualify for free shipping.

Delivery
Depending on the size and weight of the product, deliveries in the USA will be via trusted national couriers such as DHL, USPS, FedEx, or UPS. Orders typically arrive within 3–5 business days. Tracking information will be provided once your order ships.

We dispatch parcels same day Monday to Friday for orders placed before 12 noon.

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

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Description

Two Profiles. Same Performance.

Wavy Profile (RSV1)
A flowing, organic exterior with subtle contouring. RSV1 offers a softer visual language while retaining the same internal geometry and suppression performance as RSV2.

Chamfered Profile(RSV2)
A sharper, faceted design with clean chamfers and a more technical aesthetic. RSV2 is visually bold but mechanically identical inside.

Profile choice is purely about looks and feel — performance remains unchanged.

XL design for precision and ultimate quiet:

• 8-chamber modular design
• 20.2 cm (7.95") length
• 36 mm (1.4") diameter
• Internal volume: 95 ml
• Increased airflow management for maximum suppression

The XL versions offer greater internal volume for shooters who want the quietest possible report, while the standard models prioritise balance and handling.

Why choose Reservoir Mods?

Because effective sound suppression isn’t about brute size — it’s about controlling air intelligently. Reservoir Mods are tuned to manage pressure smoothly, reducing sharp crack without over-damping the system or upsetting the rifle.

Quiet. Controlled. Deliberate.

Specifications
  • Material
    Aerospace-Grade Magnesium Alloy
  • Specs
    • Length: 20.2cm / 7.95"
    • Diameter: 36mm / 1.4"
    • Capacity: 95ml / 3.34floz
    • Weight: 204g / 7.2oz

The Features:

• Precision-engineered multi-chamber design
• Modular internal construction
• Improves accuracy and point of impact
• 36 mm low-profile diameter
• Choice of 1/2" UNF thread or M14 thread
• Designed for air rifles
• Available in multiple finishes
• Engineered for consistent, repeatable suppression

What's in the box?


  • 8-chamber Reservoir Mod 
  • 8 compressed wool gaskets
  • Rear threaded cap 
  • Front callibre cap
  • 204g of ultimate street cred

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.

  • FREE US Mainland Delivery

    on orders totalling over $100

  • 5 Year Warranty

    Our products are covered for 5 years by our global warranty.

  • Dedicated Customer Support

    Email or phone us with queries about our products.