I purchased this pack mainly for the rifle scabbard, but it’s more than just a rifle scabbard. It has just enough room for a day hunting trip, with additional MOLLE/PALS for add-on pouches. My F-Class 308 rifle fits securely in the scabbard and does not move. The scabbard will accommodate a 300 Blackout with 10 round mag also. The top load has a pocket that has enough room for head lamp, a few calls, and snacks. The main compartment is just the right size for rain gear or an additional layer.
I have not been using the removable waist belt, but suggest that you do. I have been on all my hunts this season with this pack and it tends to want to lean to one side or another (while to not using the waist belt). This occurs with both rifles I have used, switching from a water bottle to water bladder, and moving my med kit around to the back of the pack on the MOLLE/PALS webbing.
Some suggestions for Eberlestock... Some hook and loops inside the top pocket would be nice, and front load version similar to the Gunslinger would be GREAT. I still LOVE this pack and will continue to use it!!!!