I have a NIB FS2000 that has both the picatinny top rail as well as the picatinny forward rail for mounting a vertical foregrip/bipod/light/lazer etc.
I bought this because I thought it would be a fun addition to my collection but I just never ended up getting the warm and fuzzies over it.
It does come with at least one FN mag, I’ll have to check what else is in the box with it. This really is one of the best bullpup rifles out there. All brass is ejected out the front so it’s especially nice for the lefties out there. There are currently 5 of these on gunbroker and the only one remotely close to this price is well used. 
Mostly interested in cash, but I’d consider trades. List what you’re offering in the first message. Just be reasonable and realize I’m not giving you $1500 for a Glock no matter how many pretty pieces you’ve put on it.