Revolution Fortress 4800 - Olive Green

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Built to Order
Backpack Platform:
Ultralight Hunting
Backpack Hunting
Backpack Size:
3-5 Days
Backpack Size:
5-10 Days
Backpack Weight:
3-4 lbs
Talon Optimal
Water Carry:
Water Bottles
Water Resistance:
3 weeks
LT-Backpack Shoulder Harness - Tan:
3 weeks
LT-Small Hipbelt - Tan - Fits 27" - 31":
3 weeks
LT-Medium Hipbelt - Tan - Fits 29" - 34":
3 weeks
LT-Large Hipbelt - Tan - Fits 33" - 38":
3 weeks
LT-XL Hipbelt - Tan - Fits 36" - 42":
3 weeks
LT-XXL Hipbelt - Tan - Fits 42" - 48":
3 weeks
LT-Backpack Top Lid - Olive Green:
3 weeks
LT-Hipbelt Pocket - Olive Green:
3 weeks
LT-Lumbar Pad:
3 weeks
LT-2 inch Frame Extension Set:
3 weeks
LT-4 inch Frame Extension Set:
3 weeks
LT-Both 2 and 4 inch Frame Extensions - 2 Sets:
3 weeks
LT-Base Talon - Olive Green:
3 weeks
LT-Base Talon - Blaze Orange:
3 weeks
LT-Mesh Talon:
3 weeks
LT-Merlin - Daypack Talon:
3 weeks

Hunting Backpacks - Fortress 4800

The Fortress is a no holds barred ultralight load hauler.  Featuring our most waterproof design with rolltop closure and two water bottle pockets, the Fortress utilizes our Talon Compression system to change the organization of the pack to match the adventure at hand. 

Handmade in Grand Junction, Colorado, USA.

Fortress Features:

  • Field Adjustable Frame Height
  • Rapid Adaptable Compression System (RACS)
  • Dynamic Belt System
  • Breakaway Carry
  • X-Pac™ Fabric
  • No zippers or hydration port.  Seam seal it and it can be made waterproof.
  • Dual water bottle pockets with shock cord closure.  Cord is user replaceable for long service life.
  • Six horizontal compression straps.
  • One over-the-top "V" compression strap.
  • Two lower load shelf compression straps.
  • Note - Ice Axe Loops have been replaced by a web loop and extra gatekeeper straps.  This is a more adaptable system.


  • Revolution / Fortress / Base Talon - Gray 3 lbs 12 oz,  Olive 3 lbs 15 oz.
  • Volume - 4800 ci packbag, Base Talon adds 1000 ci, Merlin adds 1400 ci, Load Shelf expansion adds up to 2000 ci more.


  • Top Circumference - 43"  | 109 cm
  • Bottom Circumference - 42"  | 107 cm
  • Unrolled Height - 38"  | 97 cm


  • Suspension, Packbag, and Talon of your choice
  • 6 Side Compression Straps 
  • Over the top strap
  • Removable Load Shelf
  • Field Repair Kit
  • Two 1 inch belt buckles.  A 4 to 1 single buckle is available on request.



  • Adjustable frame, Can be used at 24"-  28" height - Which Frame Height is Right for Me?
  • Three hip belt sizes, fits 29 to 42 inch waists
  • Shoulder harness easily adjusts to fit 15" - 22" torsos.


Rain Cover / Seam Sealing: 

  • For instructions, check out our video Seam Sealing a Backpack.
  • Main pack bag is made of X-Pac™ waterproof material and features a waterproof rolltop closure.  Seam sealing the outside seams is recommended for exceptionally wet environments.  
  • Water can penetrate the side zipper, but usually not in a rain situation with the pack upright - the zipper flap does an excellent job of repelling rain.  
  • Waterproof stuff sacks are recommended for exceptionally rainy conditions, and drybags for submersion or severely wet conditions such as bushwacking or canyoneering.  
  • Side pockets are 500D Cordura and are not waterproof.



Bear cans:

  • All bear cans will fit horizontally at any location in the 4800.  Go nuts.



  • Suspension is 500D Cordura and 3D mesh. Hypalon and 500D Cordura reinforcements
  • Expedition Olive (X42) is a 420 denier plain weave with a 200 psi PET laminate



  • Constant 40" diameter
  • 37" unrolled height
  • 35" max height when closed







Lifetime against defects in materials and craftsmanship. Normal wear and tear excluded

Explore real world photos from our customers

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4 Reviews Hide Reviews Show Reviews

  • 5
    Worth every penny

    Posted by Brooks Horan on 15th Oct 2018

    Our elk hunting group has done 17 years straight of alpine hunting for Roosevelt elk where we quarter and pack out every bit of the animal out of the mountains. We collectively have field tested Seek Outside, Granite Gear, Kuiu, Stone Glacier, Kifaru, etc. We have all migrated to the Seek Outside packs as the others just do not carry weight like the Revolution can especially as you go past 70 pound pack loads. When people ask what I think is the most essential piece of my kit for hunting (scope, rifle, pack, boots, etc.) I genuinely say that the best investment I have made is my Seek Outside pack.

  • 5
    Revolution Fortress Review

    Posted by James McDonald on 13th Apr 2018

    Could not be more satisfied with the performance, quality, features and weight of my Revolution frame and pack. I have used this on two backpack hunts and was able to comfortably carry half a boned out deer and camp (about 80lbs). Throughout the last season I helped pack out 3 other mule deer with loads up to 100lbs and was very impressed.

  • 5
    Updated review

    Posted by Orville Petersen on 17th Jan 2018

    Well after 5 hunts and a ton of miles, I now have some final thoughts on this pack. I'LL KEEP IT. After my original post the company did a recall on the pack and corrected the slippage issue. Once again their customer service is 5 stars all the way.

    IMO, a good pack should never be noticed. It should do what it's supposed to do, not be a constant source of irritation and you should be able to forget that you are wearing it. This pack does just that now that the slipping has been corrected. I put it on in the morning and forget about it until I need to get into it or take it off. It is very versatile with the Merlin - for day hunting I left the main bag off and just used the Merlin and the frame. That way I could have my 'daypack' and if successful still be in a position to use it to haul game which we did several times. It has now hauled a dall sheep, a mountain goat, and two antelope. All the straps that I lamented earlier made it easy to tie down bulky game quarters and hold everything in place. Even after taking a good tumble on the goat hunt the loaded pack did not need re-adjusting.
    Customer service
    lightweight and durable - you should see how much of a beating it has taken and how well it has held up.
    Con's - it is not the fastest pack to get organized because of all the straps but once you do it's good to go.
    Wish list:
    A blaze orange Merlin - I had to pin an old hunting vest to it.
    A water bottle pocket for the hip belt so that when you aren't using the main bag you can still have easy access to a water bottle. ( I don't like bladders - can't tell how much water you have left)

  • 3
    Hmmm ...... the jury is still out.

    Posted by Orville Petersen on 23rd Aug 2017

    I bought this pack for my son for a sheep hunt to Alaska. After the trip he gave it back to me and said he would look for something else. That's a good summation. I am not ready to write the pack off just yet and I will use it this coming hunting season in Colorado and post another review after that. I chalk up some of my son's experience to his lack of experience as a backpacker but some is definitely the product. I bought the pack with the Merlin option so it was in excess of $500 - a bit disappointing to have him give it back after spending that kind of money. We did kill two sheep and it worked just fine for packing the sheep off the mountain as the accompanying pictures attest. (see adventure above)

    Customer service - these guys are great! 5 stars
    Merlin - neat concept, made a great little carry on bag on the plane and on our fishing trip after the sheep hunt. He treated it like a top pack and carried small stuff in it.
    Main bag - seems very durable - we did get some water in it but we neglected to seam seal it before we left so that may have been the problem. We also had some tree sap that we had to remove with citrus cleaner which didn't help matters.
    Light weight no doubt

    The biggest problem was it seemed to be an almost constant need to adjust - the nylon straps used seem to be a little too slick so the torso adjustment moved, the belt slipped, the shoulder straps slipped, you name it, it was slipping and my son spent a lot of time fighting the bag and trying to get it adjusted as opposed to just hiking.
    It's a bit difficult to get the Merlin centered on the load so sometimes it was awkward trying to get everything balanced. My son spent a lot more time 'getting ready to move' than the rest of us.
    Good grief there are a ton of straps.
    Hip belt didn't have much in the way of padding.

    Like I said above I will reserve judgment until I have a chance to really get out and use it. I have 4 hunts coming up so there'll be plenty of chances to see if the problems subside or if I too will need to find something else. I still really believe in the concept so I am not willing to give up on it yet. We'll see.