Notes: The F2000 IWS (Integrated Weapon System) is not exactly a simple assault rifle; it is a weapon system consisting of a bullpup assault rifle and a number of snap-on attachments and weapons to suit the F2000 to nearly any sort of tactical situation.

The F2000 assault rifle is unusual for its extraction; it throws the spent case forward up a channel and then ejects it just to the rear of the flash suppresser. This is an added layer of complexity, but means that left and right handed people can easily use it without worrying about spent casings being ejected in their faces or down their shirts. The cases are not ejected into the air violently like most rifles; they fall gently to the ground. This minimizes the chance of detection of the firer by an observant enemy. The F2000 is equipped with an optical sight with 1.6x magnification; there are backup iron sights, and the optic sight is mounted on a MIL-STD-193 (Picatinny) rail. An optional feature is a complete "fire control system;" this module has a sight with a 2.6x magnification, laser rangefinder, ballistic computer, and an IR laser aiming module.

The amount of attachments and weapon accessories that may be fitted to the F2000 is staggering. They include, but are not limited to: a flashlight mount, a laser aiming module, a 12-gauge shotgun, a 40mm grenade launcher, a less-than lethal weapon module (any of these under the barrel), and a variety of aiming modules, scopes, or sights on top of the receiver.

In the Fall of 2007, a civilian/police version of the F2000 is due to be released: the FS2000. Though very similar to the F2000, several key features are changed. Of course, the FS2000 is a semiautomatic-only rifle, with a sear that makes conversion to automatic fire extremely difficult. Since many countries will not allow a civilian rifle to have a barrel as short as that of the F2000 (15.5 inches), the barrel is lengthened to 17.4 inches. The FS2000 is not sold with the 1.6x optical sight of the F2000 (though it can be bought separately), and is not compatible with the F2000’s computerized fire-control system. (The MIL-STD-1913 rail and the backup iron sights remain.) The FS2000 cannot mount a grenade launcher, nor can it mount a bayonet or a shotgun module, but other F2000 accessories can still be mounted.

Twilight 2000 Notes: This weapon does not exist in the Twilight 2000 timeline.

Merc 2000 Notes: French, US, and British troops have all "unofficially" combat-tested this weapon in various conflicts around the world; they are reportedly quite pleased with them.

Notes: The FNC was first produced in the late 1970s as an improved version of the FN CAL. It was intended to address the problems the CAL suffered from difficult environments, and to keep functioning even when dirty. Like the CAL, it is basically a scaled-down version of the FAL, and has a similar operating system. It is easy to clean, strip, and reassemble.

The folding stock folds to the right, and the FNC uses standard US/NATO magazines. Operation is by gas, and strongly resembles that used by the AK series, though with more advanced technologies and materials, and with many improvements. The FNC has a gas cutoff for use when firing older rifle grenades, and it can also use the newer BTU and pass-through rifle grenades. The receiver is made in two parts for field stripping and servicing; the upper receiver is of stamped steel, while the lower receiver is of aluminum alloy. Sights consist of a protected fixed front post and a two-position flip rear with windage and elevation adjustments; the top of the receiver also has mounts for NATO-type night vision devices and optics. The stock is of tubular steel covered with high-impact plastic, and folds to the right; fixed stocks are of a solid synthetic material. Pistol grip, cocking handle, and fore-end are of high-impact plastic. Standard FNCs are equipped with a 17.68-inch barrel having a 1:7 rifling twist to optimize them for firing SS-109 ammunition, but FNCs with 1:12 rifling twist (appropriate for older 5.56mm NATO ammunition) are available upon request. The rifle is used by Belgium, Indonesia, Latvia, and Nigeria, and several other unnamed countries. In addition, the FNC is used in a much-modified form by Sweden (the CGA-5). The FNC can use the US M-7 bayonet or a bayonet designed specifically for the FNC. Feed is from any STANAG-compliant magazine, but the standard magazines are 20-round for training and 30-round for combat.

The FNC Paratroop (also known as simply the "Para" or the FNC Carbine) is a shortened version of the FNC assault rifle, similar in concept to other such short assault rifle designs. The only big difference between the carbine and assault rifle versions of the FNC is the barrel length; it is capable of using a bayonet, rifle grenades, the RAW, or mounting an appropriate grenade launcher. Virtually all of the FNC Paratroop made have a folding stock, but a fixed synthetic stock is available for the FNC Paratroop.

Twilight 2000 Notes: This weapon is so ubiquitous that is can be found almost anywhere, though production in Belgium virtually ceased after the French invasion of Belgium, leaving Indonesia as the almost sole producer of FNCs. In the Twilight 2000 world, Latvia is not using the FNC. US Army Special Forces operating in France or French-occupied territory were also often seen carrying FNCs. FNCs taken from captured Belgian troops were often handed out to French militia forces and Belgian or Dutch civilians loyal to France.

Merc 2000 Notes: As the FNC can be found almost in every corner of the globe, it is a common weapon in the hands of mercenary and "unofficial" troops of several governments worldwide.

Notes: This weapon appears to be the winner of the US military’s SCAR (Special Operations Combat Assault Rifle) competition, though the competition and development of the SCAR is still ongoing; supposedly special ops units are to be partially equipped with the SCAR by 2008. The SCAR is essentially a highly-modified FNC, and comes in two base versions: SCAR-Light (firing 5.56mm NATO) and SCAR-Heavy (firing 7.62mm NATO). A further version is planned for the future, firing 7.62mm Kalashnikov, and will probably also be designated as some variant of the SCAR-Heavy name; other calibers may be added in the future, and some of these possible chamberings are noted below. 90% of SCAR parts are interchangeable between the different calibers. It is intended as primarily a short to medium-range weapon; its short barrel is especially suited to close assault situations. The SCAR in both iterations includes a MIL-STD-1913 rail atop the receiver and handguards with MIL-STD-1913 rails as 12, 3, 6, and 9 o’clock. The top handguard rail joins seamlessly to the receiver’s top rail, presenting one long rail. The weapon has iron sights, but it primarily meant to operate with a variety of NATO optics, laser sights, or other accessories. The barrels are designed to be changed in 5 minutes without needing headspace or timing adjustments, without tools, and not needing an armorer’s skills. Standard barrel for the SCAR-Light is 13.9 inches; CQB barrel lengths are 9.9 inches, and the "sniper" barrel uses an 18-inch heavy barrel. The stock folds, and slopes slightly, allowing the user to shoot from behind cover while presenting a lower profile. It also has an adjustable cheekpiece. The retainer for the stock doubles as a brass deflector. The SCAR cannot use the M-203, but can use the M-203 PI; however, it is specifically designed to use a variant of the Heckler & Koch AG-36 grenade launcher. The controls are ambidextrous, and the selector lever requires only a 90-degree rotation instead of the 180-degree rotation of the M-16/M-4 to operate all modes of fire. The charging handle is on the side, but may be placed on either side to accommodate both left and right-handed shooters.

As of early 2006, the SCAR-L in 5.56mm NATO has been designated the Mk 16, and the SCAR-H in 7.62mm NATO the Mk 17.

Twilight 2000 Notes: The SCAR does not exist in the Twilight 2000 timeline.