FN ® - The World's Most Battle-Proven Firearms.™

Thank you for your interest in FN Firearms.
Our site is for individuals 18 years of age or older.

Are you 18 years of age or older?


deFNder® Light

Available for military sales only.

The deFNder® Light was designed to provide a lightweight remote firing capability with the operator completely under armor protection. The system is optimized for vehicles that cannot mount a heavier medium weapon station, vehicles that have no requirement for a heavy machine gun, or perimeter defense applications. As a result, FN has used its experience in medium weapon stations to design and develop a weapon station that is optimized to mount the 5.56mm and 7.62mm machine guns for perimeter defense, small vehicles and watercraft. The deFNder® Light is scalable in terms of ammunition capacity and optical capability, depending on customer requirements, and it is also capable of accepting armor protection packages to guard against strikes from rocks, obstructions and fire from similar-caliber weapons. Additionally, the deFNder® Light is capable of elevating to +80 degrees and depressing to -60 degrees. This capability allows the operator to engage a target that is much higher than the vehicle, which is suitable in urban terrain as well as in mountainous regions. Furthermore, the capability to depress the weapon to -60 degrees will allow the operator to engage a target that is close to the vehicle or into lower terrain that drops away from the vehicle.

Military pricing on request.

*Product follows USA specifications
*Military products available to U.S. sales only

deFNder® Light

deFNder Light with FN MINIMI mounted on tank

FN deFNder Light firing



  • Overall Height: Less than 21” overall height (basic configuration)
  • Weight: Less than 190 lb. with FN® M240B and 250 Rd.
  • Capacity: 250 Rd. ammo box (7.62x51mm linked)
  • Traverse Speed: 90 degrees per second
  • Elevation Speed: 90 degrees per second

General Specs

Accepts all current FN® M249, FN® MK 46, FN® MK 48 and FN® M240 infantry machine guns

Vertical movement range of +80 degree elevation through -60 degree depression

360-degree traverse

Up to 20 degree vehicle mount deviation from the horizontal plane without influencing system performance

Modular design offers a wide range of user-defined custom options

18-32 Volts Direct Current (VDC) power meeting MIL-STD 1275B

Continuous drive motors

Recocking actuator


Based on customer requirements

CCD for use in normal light conditions, LLCCD for use in low-light conditions

Thermal/infrared uncooled or cooled camera for low-light and/or bad atmospheric conditions

Laser rangefinder together with the ballistic computer for ballistic compensation reduces distance-related aiming error


Lightweight for ease of installation on vehicles and ground-mounted applications

Low silhouette reduces counter fire target size and minimizes visual intrusion in sensitive areas

Soft recoil mount increases intended target hit probability and reduces collateral damage

Weapon can be quickly dismounted for infantry use


Operator display console for target identification and engagement

Single control handle for sight selection, aiming and firing

Built-in test system for diagnostics and failure detection


Cooled infrared/thermal (IRT ) night sights, Laser Rangefinder (LRF) and ballistic computer

STANAG 4569 Level I ballistic protection

Stabilization for firing on the move

Interface with Slew to Cue sensors such as Laser Warning Receiver (LWR) and Small Arms Detect

Locating System (SADLS)

Target tracking system

Up-capacity ammo boxes of 600 rounds of 7.62x51mm NATO and 1050 of 5.56x45mm
NATO linked ammunition

Fired case and link collection