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Big Gun Harness

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Loaded with essential aid climbing features, the Big Gun harness is designed for the demands of a big wall mission. READ MORE
Item# BD651030TGLDM__1


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Loaded with essential aid climbing features, the Big Gun harness is designed for the demands of a big wall mission. Learn More


The ultimate big wall, aid climbing harness, the Big Gun is loaded with features to make your long days aiding in the vertical more comfortable and efficient.

  • Thermoformed foam bullhorn waistbelt with trad buckle
  • Adjustable, removable leg loops
  • Seven color-coded customizable gear loops
  • Two color-coded belay loops and 12 kN-rated haul loop
  • Left or right holster slots with one hammer holster included

Tech Specs

Series :   Mountain Trad Series
Weight :   660 g (1 lb 7 oz)


BD athletes Cedar Wright and Kate Rutherford climbing Ariana (5.12-) on the Diamond of Long's Peak

BD athlete J.P. Ouelet makes first ascent of The Wandering Direct (IV 5.11 R) on South Howser Tower, Canada

Big Gun Harness is rated 4.8 out of 5 by 24.
Rated 5 out of 5 by from Cushy I bought this for trad climbing, not aid, so can't really speak to that aspect of it. I was looking for something that would handle gear better than a sport-oriented harness. The padding is great and the harness is surprisingly light for its size. The only drawbacks I see are that the side gear loops are small--it's advertised as having a ton of gear loops, but the actual loop real estate isn't a whole lot more than a "normal harness". And the big gear loop in the back is awkward to access, especially with a pack on. That said, however, I'm very happy with the quality and features and am sure this will last me through many days of fun climbs.
Date published: 2015-06-02
Rated 5 out of 5 by from the Big Gun is the silver bullet for any large objective! Nothing is worse than questing out on a route that has hanging belays, heavy racks weighed down with beaks and hooks or even 200meters of static line. whether you go ground up or drop in to shoot a project. The Big Gun harness has plenty of room to clip it all on. The double belay loops make it convenient to run daisies off one side while having belay devices on the other. The buckle system is easy to tighten and release, especially when fingers are swollen and sore. The hip belt handles heavy loads well. Double set of cams, hammer, pins and beaks, sippy cup or whatever else gets clipped on, the Big Gun keeps the waist happy while dangling in the vertical realm. Looking for the magic bullet to help out on the next #MegaProj? The Big Gun harness has it covered.
Date published: 2016-11-20
Rated 5 out of 5 by from Simple This harness is straightforward. Three double backing buckles, gear loops, and some added foam along with a thick waist belt for comfort. Not like some other new sporty harnesses with auto-backing buckles and helium inside the darn waist belt to help you scend. I have not figured out two things. I still need to work out adjusting those thicker than average leg loops, they seem to make it difficult to keep everybody down there in the same room, but I think with minor tweaking, I'll get it right. And the two smaller gear loops that are on top of another set haven't made sense to me yet, so I just don't use those. The large gear loop on the back is SUPER useful. As others mentioned, comfortable to wear, hang in, etc.
Date published: 2014-11-05
Rated 5 out of 5 by from Comfort + Function I use this harness for SAR work which is not climbing but does include rappelling and ascending. We also hang for long periods when performing litter rescues. I worked with this harness on for 5 days straight shortly after I purchased it and was amazed at its comfort. Since then I've used it numerous times and have no complaints. It also integrates well with the BD Vario Chest harness. I just wish BD made a bombproof connector strap! The only problem I have is my waist adjustment. I am on the border between Medium & Large. I bought a large and it tightens as far as possible. Problem is that when strapping down, it always slips out a bit. More my borderline size than the harness, I think.
Date published: 2016-04-18
Rated 4 out of 5 by from Great for SAR This harness is exceedingly comfortable. It has plenty of gear loops and I really like the hammer holster (I use it for my mag flashlight as well as the hammer). My only trivial complaint about this harness is that the buckles are not auto-locking. I am 5'll 190 and the size large is almost too small; when I order another Big Gun, I will probably go with the XL.
Date published: 2016-04-19
Rated 5 out of 5 by from Comfortable, Functional, Durable I bought this harness knowing I will be doing a lot of hanging in it and needed a all around harness for SAR, Bolting, and Long days of work in it. The padding and width of leg and waist straps are big and comfortable but not so large that it is bulky and in the way. The dual belay loops are very handy when bolting and SAR. If you don't use them for that then it would just be great to alternate between the two so you don't get the wear and tear. I haven't used the hammer holster and actually removed it. There are plenty of gear loops although the loops themselves are small except for the large one on the back which is difficult to use. At first I was worried it wouldn't last long but it did. I've had this harness for more then a year and check it every time I put it on. It is a very durable harness that gets the job done. For the price and lifespan for this harness I am probably going to purchase another one, I recommend this product.
Date published: 2016-07-06
Rated 5 out of 5 by from Burly design I'm happy! This is great for hanging out on big walls projects or even small walls on a fixed line. Maybe you're photographing your friend and hanging there for a while. Maybe a few hours fixed a route this is your harness! I'm happy it's comfortable it's like taking you're favorite lawn chair with you on the wall.
Date published: 2015-07-08
Rated 5 out of 5 by from Love the big gun This harness is full of features and plenty of gear loops that make easy to rack your gear. Having plenty of gear loops cl helps prevent congestion and makes easier to unload and place gear. It's taken time getting use to the weight because it weighs a bit more than my chaos but I will manage.
Date published: 2017-09-18
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