I used to have one of those! Very cool rifle. Most accurate ball-shooter I've ever seen, has some real power, and the auto feed works flawlessly. Those .22 lead balls will flat put a hurtin' on something too...if there were such a thing as a spring-piston gun that would be legit home defense weapon, that fellow is it.
I believe FARAC is now defunct so take good care of it, ya got a real collectible on your hands.