FN F2000 5.56mm bullpup assault rifle

FN introduced the 5.56mm F2000 bullpup assault rifle in 2001. Militaries and LE units have slowly shown interest.  Slovenia adopted it midyear 2006.

See the video clip of an FN F2000 firing at TechEblog. Here's a LOUD YouTube video. Here's another showing firing of the grenade launcher, with the characteristic "bloop" sound.

Note the shells are ejected near the end of the barrel, eliminating a problem associated with most bullpups, especially for lefties. Combined with ambidextrous controls (a la the FN P90 PDW), this makes the rifle fully ambidextrous. This site shows graphically how this is done.

David Crane @ Defense Review featured the F2000 after seeing it at the 2005 Shot Show

The FS2000 is a semi-auto version for civilian sales, introduced in June '06. [400 early ones had to be recalled due to potential slamfires when using civilian ammo, as a result of of accidental use of  heavier military firing pins designed for military ammo with harder/denser primers. This was a production error and not an inherent design flaw.]

David Crane @ Defense Review  has featured the FS2000.