12.7x99mm NATO (.50 cal)
  • Minimi 5.56 Standard

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  • Minimi 5.56 lance grenade

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FN Herstal is the original manufacturer of the Quick Change Barrel (QCB) version Browning M2HB .50 cal heavy machine gun.

Today, tens of thousands of the FN QCB configuration are in service around the world.


  • Fast, easy and safe barrel change procedure

    The FN® QCB system allows the barrel change to be quickly carried out by one person, reduces exposure time to enemy fire and eliminates the need to check and adjust headspace at user level.

    The reliability and effectiveness of the M2HB Browning .50 cal machine gun remain unchanged.
  • Target effect

    A full range of cartridges including Armor Piercing and Armor Piercing Explosive Incendiary allows the FN® M2HB-QCB to engage soft skinned and light armoured vehicles and buildings or bunkers.
  • Easy and Quick Conversion in service M2HB machine guns

    In service M2HB machine guns of FN Herstal or other origin can be converted in less than 30 minutes by an armorer in a normal workshop using a simple kit of tools and gauges to the FN® M2HB-QCB configuration.

    The modifications to the original M2HB design are limited, so the effect on user training and logistics are minimal.
  • One weapon for various applications

    The FN® M2HB-QCB can be used on a wide variety of mountins for vehicles, boats and ships.

Every reasonable effort has been made to ensure that all product photographs, descriptions and specifications on this website are accurate. However, inadvertent errors may occur, and changes in design or materials, due to our continual effort to improve products, may result in some change in specifications before subsequent publications are issued. FN Herstal, S.A. reserves the right to modify or change specifications without notice.