Made in the USABerry Compliant

The 3 DAY ASSAULT – designed to be the last word in assault packs.

We've taken our classic design of the 3 DAY ASSAULT and streamlined the exterior by removing and updating features, making it the best pack for versatility and mobility. It has three rows of external MOLLE webbing, giving you options to expand, and side compression straps minimize bulk. The 3 ZIP provided easy access to sustainment gear, ammo, IFAKs and tactical radios. 

  • 500D CORDURA® fabric and YKK® zippers
  • Three rows of MOLLE on front panels
  • Internal sleeves and ports integrate up to three hydration reservoirs
  • Zipper port for radio and antennae access
  • Radio inputs, outputs and antennas route easily through the three urethane coated zippered ports
  • Velcro on lid for identification and patches
  • Waist belt stows away when not in use
  • Futura Yoke provides rapid adjustment for differing torso lengths
  • Volume: 1800 cu-in (33 L)
  • Weight: 4.3 lbs (2 kg)
  • Dimensions: 18"x11.5"x8.5" (46x29x22cm)
  • Frame System: Futura Frame
  • Country Of Manufacture: USA
  • Intended Use: Everyday Carry, Patrol, Urban Assault

Frequently Asked Questions

We're moving to a kitted system so that we can design and build packs and frames that are optimized for integration based on the function of the product. There are some cool new things in the works. In the meantime, we may be able to accommodate pack only orders based on available inventory - contact MR Customer Service or call 406-585-1428

As much as we would like to be able to offer our military/LE/ firefighter customers a discount on our packs, we have government contracts in these markets that prevent us from doing so.

The only repair that we can offer on Dana Design products is a replacement back foam pad on packs with the ArcFlex body panel design. We can ship the foam to you and you can easily install it yourself without having to send the pack in to be repaired. Replacement back foam pads are $15.00 plus shipping. For any other Dana Design pack repairs, please contact Marmot or try the following reputable gear repair companies:

Marmot Warranty:

(888) 311-2900

Mon - Fri : 7:30am - 5pm (PST)


Boulder Mountain Repair:

2200 Central Ave. Suite F

Boulder, CO80301

(303) 499-3634


Rainy Pass Repair:

4415 Stone Way N.

Seattle, WA98103

(206) 523-8135


We are not set up to perform custom work on individual orders and no, we cannot build a pack for you in a custom color. If your concern is in regards to sizing please give us a call at 406-585-1428.

Also, please know that modifying your Mystery Ranch pack may void the lifetime warranty, so please think first before you start ripping straps off and cutting holes in your pack to make it more aerodynamic for winged flight.

First, start by washing your pack with hot water in the shower. Use a mild detergent like Dawn to get minor dirt and grime out of your pack. Dry the pack out of direct sunlight. DO NOT USE HARSH CHEMICALS TO CLEAN YOUR PACK. If you need to get odors/blood out of your hunting pack, please use Atsko Sport-Wash Laundry Detergent

We always recommend that you size down for the waist belt. If you fall in-between sizes on the yoke, we recommend that you size up.

Mystery Ranch accepts returns for a refund within 60 days of the original purchase date. Items must be returned in brand new, unused condition, and shipping charges are non-refundable. Please give us a call at 406-585-1428, and we can get you set up with a Return Authorization (RA#).

If you are in need of a different size yoke or waist belt, please give us a call at 406-585-1428.

Why did you add production facilities in the Philippines and Vietnam?

MYSTERY RANCH added these facilities because of the increased demand for our product. We needed the additional facilities to build for customers who don't require (Berry Compliant) US production and / or don't want to pay a premium price for products built in the U.S.A. With these additional offshore facilities, we are able to focus our domestic facilities on the Berry Compliant orders.

How do I know if the pack I want is made in the US, PH, or VN?

It will be noted on the product page on our website and you are always welcome to call us and ask if you don't see the "US" or "world" icons that denote production location.

Is the quality of the packs the same?

Yes, absolutely! We carefully select the highest quality materials and ensure that all production facilities adopt our quality standards and techniques to deliver products consistent with the MYSTERY RANCH legacy. Our distributors who have received product from the US, PH, or VN are unable to tell the difference without looking at the label.

How do you ensure consistent quality?

Our factory resources use the protocol defined by our team in our production packages in order to deliver consistent quality gear. Upon introduction of new products, our product engineers visit our factory resources to work with them to develop new styles. As the product goes to production, our QA and QC teams will then visit our US, PH, and VN factories to ensure the finished goods meet our MYSTERY RANCH standards.

For more information please contact MR Customer Service or call 406-585-1428

I bought this to go trekking in Nepal and went to Everest Base Camp and could not have been happier. I also used this on three different deployments to Afghanistan, great for traveling and super light....No tears, rips and made in the US....buy it, you will not regret it!
I've owned this pack for over 3 years now. It's done literally 100's of miles in the Rocky Mountains and been on just about every continent. I'm not really into the whole EDC trend and I do find that this pack may be a little too technical for EDC, for me anyway. I think it comes into its own on day trips in the outdoors and international travel where there is extended carry with moderate weights. I do not have the live wing upgrade but he hip belt works well without it as long as the weight is below 40lbs. I have a bigger pack by Mystery Ranch with the NICE Frame for longer expeditions and meat hauling. This 3 days assualt pack also works very well as a carry-on bag, and through airports. I wish I would have had gear like this when I was humping rucks in the military.

The biggest benefit to a Mystery Ranch product that I've seen is the quality and tightness of the stitching. I've handled and carried gear from many manufacturers including one of their most touted competitors, and upon inspection, Mystery Ranch is head and shoulders above them in construction. I own about half a dozen products from different competitors in the same price range. I've concluded that Mystery Ranch is the most durable and well put together. My 3 day assault pack is as good as the day I bought it. All the paint is worn off the zipper pulls and they are bronze colored now and I've even dusted it with some paint for custom camouflage. At this point I'm thinking this pack will be with me until the end of my active life. Thanks Mystery Ranch. Please don't change the quality.
I like this bag a lot. I use it daily, for school (college), regularly on hikes, trips, camping, biking, etc, and it meets every need. It's made well, out of durable materials. I don't worry about damaging it on anything, nor do I worry about the things inside the bag getting damaged (when used within reason, of course). It's not an lightweight bag though, just in case you weren't aware of that. That being said, it's not overly heavy for it's construction, and it's zippers are top of the line. I bought it with the padded waistband, which is a must if you are putting any meaningful weight inside, because between the should straps and the waistband, loads are carried very comfortably, easily, and securely for long periods of time. The top lid does tend to flop down over the main pocket then I don't want it to, but that's not a big problem, just a minor annoyance. Also, the strap lengths are quite long, and I'm not a big fan of the roll-over-velcro-up retention system, because it can make adjusting straps troublesome. Owner for nearly a year, and feel this deserves 5 stars, for completely meeting my expectations.