
Defence · Small arms
Small arms components
for the most widely fielded NATO weapon platforms.
Who machines small arms components for NATO weapon platforms?
Mustad Belgium manufactures small arms components for the most widely fielded NATO weapon platforms.
Supply ranges from single parts to assembled sub-assemblies, and includes reverse engineering and spare parts for platforms in service.
Over 1,000 different defence components.





Accessories for optronics and weapon platforms.
Machined accessories and mounting systems for the optronics that equip modern platforms — sighting supports, PICATINNY interfaces, brackets. Optical alignment demands the same machining precision as the weapons themselves, and these accessories are produced in the same workshop.
Universal Sight Mount →Beyond build-to-print.
A drawing is not always the starting point. Mustad supports weapon platforms through their whole life cycle — including those already in the field.
- 01
Co-design and design for manufacturing
At your request, our engineers review your design before the first part is machined and put forward alternative proposals on tolerances, materials and manufacturability.
- 02
Reverse engineering
No drawing available? We measure the existing part and rebuild a complete, production-ready definition.
- 03
Modernisation of firearms
Upgrading an existing platform: new components machined to current standards, fitted to legacy weapon systems.
- 04
Spare parts & obsolescence
Long-term availability for platforms already in service, and parts no longer available put back into production — in the same workshop, to the same standard.

Sensitive components, handled accordingly.
A secured site
A secured building with controlled access, monitored day and night by a security company.
Secure infrastructure →Lot-by-lot traceability
Materials, treatments and inspection results tracked from raw material to delivered components, with documentation per delivery.
Confidentiality
Enquiries are handled under NDA on request. Most of our references are confidential and are not shown here.
Frequently asked questions about small arms
Which small arms components does Mustad Belgium machine?
Bolts, breech blocks, bushes, cam pins, ejectors, extractors, firing pins, flash hiders, hammers, housings, lower and upper receivers, rifles and pistol slides, hunting gun receivers, machine gun top covers, muzzle brakes, triggers, sighting supports and washers — proven across the world's most widely fielded weapon platforms, from single components to assembled sub-assemblies.
Does Mustad Belgium machine accessories?
Yes. Alongside firearms parts, Mustad machines weapon accessories and PICATINNY mounting systems for sighting and optronic equipment; every accessory is produced with lot-by-lot traceability.
How does Mustad Belgium handle sensitive defence components?
A secured building with controlled access, monitored day and night by a security company, where sensitive components are stored and handled accordingly. Technical data are circulated on a restricted basis, a documented and regularly tested disaster recovery plan (DRP) covers production as well as IT systems, and enquiries are handled under NDA on request.
More questions? Read the full FAQ
A small arms component to assess?
Mustad responds within two working days with a first feasibility assessment.
I'm sending my CAD files →Confidentiality guaranteed · NDA available on request

