Mystery Ranch Three Day Assault Pack Review (3DAP)

Mystery Ranch Three Day Assault Pack Review (3DAP)

Mystery Ranch is well known in the carry community for their great military based backpacks as well as their Hiking and Hunting pack lineup. The Three Day Assault Pack (3DAP) as I will be calling it for now on, is one of their best selling Military based packs and for a good reason. Every pack in Mystery Ranch’s Military lineup is made in the US and backed with a lifetime guarantee. 

The 3DAP is built from all 500D Cordura for the best balance between being lightweight and durable. The 3DAP is also accompanied by large YKK water lined zippers with paracord pulls, and large matching buckles. 

At 32 Liters the 3DAP is the perfect size for almost every adventure. I have taken it on many hikes and one overnight camping trip to the Red River Gorge in Kentucky. However, if you're looking for a backpack to carry on a daily basis to work or school and have a laptop this is not the bag. 

On the top of the pack, there is a hook and loop square to attach all of your morale patches. Behind this square, there are two smaller pockets. The first pocket being the smaller of the two is where I kept my phone, wallet, and keys. This is a great place to put your phone or glasses as it is on the very top of the bag and will keep from getting crushed. The second pocket is the larger of the two and is where I would keep my Esee 4 fixed blade knife, headlamp, paracord, lighter, and gloves. At first glance, this pocket does not seem to be able to hold everything I just listed but most of the time I would have extra room. 

Towards the harness of the 3DAP there is a horizontal zipper that runs across the top of the pack. This zipper can be open to allow for easy access to the inside of the bag without opening the main zippers on the front.

Moving down the bag you cannot help but notice the patented “Three zip” design Mystery ranch has become famous for. I found this to be one of the best features of this backpack as it allowed for better packing when getting ready for a day trip. Most larger hiking or backpacking backpacks only allow access from the top lid of the pack making it hard to get your gear at the bottom of the pack. The three zip of the 3DAP allows for access to the top of the bag or the very bottom depending on what you need to get. 

Running across the zippers on the front of the bag there are two compression straps completed with military grade buckles to keep the pack small when it needs to be, or allow for strapping other items to the face of the pack.

On either side of the pack, there are elastic water bottle holders that can carry up to a 32 ounce Nalgene. Underneath these pockets, there is another smilier sized pocket without a bottom. This pocket is for carrying any long items such as a camera tripod or a firearm. 

Behind the water-bottle pockets on the sides of the 3DAP, there is an area that will store the built-in waist belt. When not in use either side of the waist belt can be folded up and buckled out of sight. When on a longer hiking or carrying a heavier load one can unbuckle, unfold, and clip up to help. This feature on the back is a must have, there are not many instances that I am using the hip belt and if it was not able to be stowed away it would no doubt be in the way. The hip belt is not the most padded but it does do its job. 

On the inside of the bag, there are two mesh pockets that smaller items can be placed that you want to keep separated. Three rows of mollee webbing can be found against the back panel of the bag which can be used to attach admins pouches or other items. Under the mollee webbing, there is a small sleeve which I used to store my hydration bladder on hikes. 

The harness and shoulder straps of the 3DAP are hands down amazing. I took this pack on a few rucks with 40+ pounds strapped up and it carried better then any other pack I have used thus far. The shoulder straps are very well padded and fit my body excellent. The 3DAP comes with an included sternum strap. The futura frame can be adjusted to the users specifications and works perfect. 


  • 500D Cordura 
  • Built in America
  • Lifetime warranty
  • Stow-able hip belt
  • Futura Harness with padded shoulder straps
  • Can carry large tripods or firearms  


  • Without strap organizers straps can get messy
  • Not cheap at $325
  • Not much padding for items at bottom of the pack

All in all the Three Day Assault Pack by Mystery Ranch is a kick-ass, built in America, gear hauler. This pack is extremely capable for almost any outdoor adventure whether it be a day at the range, an overnight hiking in the Rockies, or a busy day in the city, the 3DAP will not let you down. 

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