The Eberlestock X1 backpack is an all around great daypack.  It has the capability to carry both a bow and rifle with the built in Rifle scabbard and butt bucket.  Not only will the pack carry a gun and bow but you also have quick access to get both off the pack without ever having to remove the X1 pack.  In addition to those features it has multiple pockets for organizing your gear and is hydration bladder compatible.  The built in butt bucket also acts as a meat shelf for carrying out heavy loads if needed.  The suspension is fully adjustable for different torso lengths.  

Check out the all new optional Endo Internal Frame Accessory from Eberlestock.  The Endo frame is designed to sit inside the X1 Backpack and substantially increases it's ability to carry weight.

Please watch the video below I did of the Eberlestock X1 for a full review.