Got the cheek rest off ebay. CAA cheek riser I beleive. as for the front grip bipod, same thing. Its not that great, the ''feet'' are a bit wobbly sideways but I paid 20$ shipped for it and it does the job without a problem anyways.
As for Zombies though, the purist would be better off with their SKS because of the Bayo...lol...not too worried about zombies though...lol!
thanks for the compliments, I know opinion vary greatly on ''mall ninja'' SKSs but I love it and it works great for me!