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3 Legged Thing

Reservoir Mods – Precision Airgun Moderators

$9552 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

Delivery

Depending on the size and weight of the product, we will ship your parcel via Royal Mail International Tracked & Signed For, or UPS for larger or heavier items.

Orders over $400 qualify for free shipping.

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

Customs

You will be responsible for paying any customs or import fees your country may charge. We declare the cost, weight and description of the contents to our courier at the time of dispatch and submit our customs data electronically to aid customs clearance.

If you’re still unsure on whether you’ll be subject to customs fees, we’d recommend contacting your local customs office for more information before placing your order.

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.

Compact design for balance and handling:

• 5-chamber modular design
• 14.5 cm (5.7") length
• 36 mm (1.4") diameter
• Internal volume: 59 ml
• Ideal for compact setups

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: 14.5cm / 5.7"
    • Diameter: 36mm / 1.4"
    • Capacity: 59ml / 2floz
    • Weight: 134g / 4.7oz

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

• Intelligent air flow
• Available in multiple finishes
• Engineered for consistent, repeatable suppression

What's in the box?


  • 5-chamber Reservoir Mod
  • 5 compressed wool gaskets
  • Rear threaded cap
  • Front callibre cap
  • 134g 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 International Delivery

    on orders totalling over $400

  • 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.