This should fit the bill. I have a Condor 42" tactical rifle bag for my AR15 and one day I tried it out on my SPS Tactical and it works great! Plenty of padding and if it fit mine it will fit yours. I know you stated you dont need pockets, but It has 3 pouches that can hold ammo, sling and your bipod comfortably and they can be removed. I think I paid $60 for the bag at my local mil surp store and so far the bag has held up very well. Heres a link to Condor, but you can find them online at various vendors for a reasonable price.RBoomK said:
http://www.condoroutdoor.com/128riflecase.aspx