The 40mm grenade launcher is capable of launching standard "dumb" grenade projectiles utilizing a built-in fire control system (FCS) that is powered by batteries housed in the shoulder stock. The FCS is actuated by a button near the main trigger system and brings into action the integrated laser range finder which feeds calculations to a computer. The user is then "guided" to the optimal elevation of the weapon based on distance to target and environmental factors to which he/she can then engage at the best angle with reasonably accurate results.
To date, FN has been developed into several variants playing upon the original F2000 configuration. The F2000 "Tactical" is delivered sans the integrated optical sight component which is replaced with a MIL-STD-1913 style rail system. Iron sights take the place of the missing scope. The F2000 "Tactical TR" is similar to the F2000 Tactical but is delivered with three total rail positions for broader tactical options. The F2000 "S" is a combat version specifically developed for the Slovenian Army and brings about Picatinny rail support with an integrated carrying handle over the receiver. The FS2000 is a semi-automatic-fire only model intended for civilian use and these lack the scope of the military version and feature other civilian-minded market modifications to make their ownership legal. The FS2000 "Standard" is similar to the aforementioned FS2000 and also intended for civilian use but comes with the factory-supplied 1.6x magnification scope component. The F2000 CQB is yet another civilian-minded market entry and sees the handguard removed in favor of a three-point Picatinny rail system for optional accessories.
The F2000 has seen global use beyond Belgian borders and is currently in service with the forces of Belgium, Croatia, India, Libya, Pakistan, Peru, Poland, Saudi Arabia and Slovenia. Of note here is that all purchases were specifically made for special forces groups within each respective country and not for use by the regular army. As the F2000 is an ongoing developmental product of sorts for Fabrique Nationale, there are several other optional additions in the works. One such addition is a multi-shot grenade launcher unit as well as capability to launch "smart" grenade munitions.
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