Recently I got a Blackhawk! buttpack from a trade. I carried it with LC-2 equipment.
This is an awesome buttpack, the only drawback is that it literally is on my behind, too much. So I made a small modification, using what I had at home; a spoke, paracord, carabiner and keyring. Havn’t tried it out yet. This should lift the pack enough, so that it doesn’t bother me when walking.. No doubt there will be more mods…