http://www.airsoftcanada.com/showthread.php?t=32283
Its a magpul stock
http://www.magpul.com/
Vodnik has one
the lower rail, not 100% sure...though I have seen it with a biopd attached to it. A dual bipod setup. One on the front and one on the rear(though Ill bet aiming would be a bitch).
I belive its a real steel stock only though and requires a RS adapter.