Instant Proof

Same-day service

Volume Discount

Without compromise

Expert Handling

Caring for every firearm

Firearm Deactivation

Ensuring Safe Deactivation

Adhering to legislative standards to render firearms permanently inoperable

The London Proof House plays a pivotal role in the deactivation of firearms, ensuring they are rendered permanently inoperable while complying with stringent legal standards. The deactivation process involves modifying the firearm's internal mechanisms, such as welding the barrel, removing firing pins, and altering the chamber, to prevent any possibility of reactivation. Once deactivated, each firearm undergoes a thorough inspection by the Proof House to verify compliance with the required specifications. Upon successful inspection, the firearm is stamped with an official proof mark and issued a deactivation certificate, serving as legal evidence that the firearm is no longer functional and is safe for ownership without a firearms license.


The deactivation standards have evolved over time, with significant updates to enhance public safety. The Violent Crime Reduction Act 2006 introduced important amendments, the Home Office produced stricter regulations on the firearms deactivation process required. These updates ensure that deactivated firearms meet rigorous safety criteria, aligning with both national and international standards. The London Proof House meticulously applies these standards, providing assurance to collectors, museums, and enthusiasts that deactivated firearms are compliant with current legislation and pose no risk of reactivation.


PROOF SERVICES

The highest quality gun proof services available in the UK

Gun Proof & Reproof

We proof guns for dealers, the military, precision target rifles, best gun makers, importers and auction houses.

Military Proof

We have a specialism in military gun proof, including remote proof services for manufacturers, and high volume.

Imports and Exports

We proof all kinds of imported guns and with pre-booking provide a same day instant proof service.

We are ISO 9001 Certified

ISO 9001:2015 is an international standard that specifies requirements for a quality management system (QMS). 


It is designed to help organisations ensure they meet customer and regulatory requirements while enhancing customer satisfaction. 

Frequently Asked Questions

A little insight into the world of gun proofing

  • I have lost my deactivation certificate, can I sell my deactivated firearm?

    No. You can only sell a previously deactivated firearm if it is accompanied by a certificate, and marked as deactivated. You can send your gun to the London Proof House to be re-certified.

  • Can I sell my deactivated firearm that was certified to a previous standard?

    Your firearm can only be bought and sold, once deactivated if it is certified up to the 2018 specification, and a certificate is issued confirming this.