The FS2000 is the semiauto civilian version of FN's F2000 bullpup rifle. It was designed for military use, but contracts have been well below FN's hopes - only Slovenia has decided to adopt it as a standard service weapon (several other nations have bought small quantities for specialized uses).
Being a swoopy-looking black polymer rife, it isn't the sort of thing I'm normally drawn to. But...attitudes can change. It's a very comfortable rifle to shoot, and internally it borrows heavily from the AR-18, which is a long-time favorite of ours.
