I've never liked carrying my rifles muzzle down when they're on my pack! I cut the scabbard out of this pack and attached common loops at the bottom of the "tunnel" and whipped up an adjustable cradle. The side compression straps have been replaced with RG g-hook straps and the top g-hooks...
www.rokslide.com
I still have this Rambler available. And I think I have some other options for the compression straps if you didn't want the RG w/ G-hooks.