at 20:06:20 from the OP...
Thanks, Art, for being as predictable as I... er... predicted.
He will now try to justify it as a "valid question" rather than the flame-bait that it actually is.
But, to address the OP- I haven't hunted in, wow, decades. Mostly for lack of time than any other reason- it isn't particularly high on my list of chosen avocations. The last time I carried a rifle backpacking it was for bear defense in particularly dangerous parts of BC and Alaska and it was decidedly non-UL: a Marlin .45-70. Some day- whatever that means- if I get back into it my rifle is unlikely to be a place where I skimp on weight. Mind you I wouldn't buy a 12-lb benchrest monstrosity either, but if I'm out hunting then the hunting is the priority and I'd get what I thought was the best rifle for the job. Yes, weight factors into what I'd consider "best" but it is not the most highly-weighted factor. Those lightweight Remington 700s come to mind as a decent choice, if the game is appropriate to the calibers offered. Back when I small-game hunted (long before going UL) I carried a 20g Remington 1100- as shotguns go that's pretty light. If I were to do it again I might get a lightweight single-shot or bouble-barrel 20g of some sort since if I ever hunted again it would be more for the experience and the esthetics of the endeavor, rather than making the bag limit every day. I used to shoot trap competitively and won some trophies, so I can manage just fine with a 20g.
Clearly, if you are gutting large game you don't want to be doing so with your Leatherman Squirt. I would think that a real knife would be mandatory, but a perfectly adequate dressing knife can be pretty small. This is less clear with small game but I think I'd still want a better knife- if nothing else cleaning a Leatherman afterward would be a PITA.