I had not heard of a 'Huber Trigger' until your posting.

Then again, I did not realize Teddy Roosevelt led "Marine Rough Riders" up San Juan Hill! (From description on Huber Trigger website). For $97.00, I could do a lot of practice shooting.

In my experience most Krag triggers are not so bad. I suspect an after-market trigger would disqualify a Krag from use in CMP competitions.

IMHO - Kind of another 'interesting solution to a non-existent problem'. Cleaning, lubrication, and knowledgeable 'stone work' are a much simpler and 'match legal' remedy to any creep and roughness.