I recently installed this on my Hydros Pro. Reviewing the instructions that came with the knife (and the online version) do not really provide any help! The pictures in the instructions though, lead me to believe that there is another version of the sheath because it mentions cutting to make it work for mounting on webbing. That is NOT an option with the sheath that I received. The area to cut is solid and not the same design with a small "bridge" of plastic to be snipped off so that a webbing belt could slide through.
Anyway, for anyone else looking to do this. It is simple and just takes a few minutes of time. The Mako does come with its own mounting hardware. This probably works on other brands of BC as well as other SP models too as the mounting holes are a somewhat a standard width apart. You could even mount on the Hydros Pro with the provided mounting hardware that comes with the knife (see 1st pic, below the sheath is what comes with the knife). However I would not recommend doing this. 1) the screws are long and might interfere with the weight pouches; 2) you won't have the structural support that the Hydros Pro knife/accessory mount provides (see 1st pic, above the sheath).
I also bought a second sheath with no leg straps so that I can leave one sheath mounted on the Hydros Pro, and use the other sheath for the knife during transport etc. as I will carry-on the BCD but put the knife in checked luggage. For $10 or so I like it better than wrapping the knife etc.!
Pic 1: Hydros Pro knife/accessory kit above and lined up with the sheath and its included mounting hardware below
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Pic 2: This is AFTER the leg straps have already been removed following the included instructions. Here you can clearly see that the 'rail' is solid and there's no "bridge" that could be snipped off to allow a webbing belt/harness to slide through.
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Pic 3: lining up the optional (bought separately) knife/accessory mount for the Hydros Pro with the back side of the sheath
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Pic 4: You NEED to be sure to use the included washer that comes with the accessory kit when using the Mako sheath, otherwise the screws are a little long
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Pic 5: with the washer the spacing is good
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Pic 6: Lined up and installed on the integrated weight pouches of the Hydros Pro
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Pic 7: the screws pose no clearance issues with the knife
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