Hi Jake,
Kelly looks like he's holding a '66 Winchester rifle, not a Henry. The mag tube looks smaller than the barrel (compare to the picture with the guy standing next to the Henry), and one can kinda make out the end cap and wooden fore-end on Kelly's rifle. (The area by the receiver seems to actually be part of his hand/fingers making it look split.)
Those pistols Ford has on look like Dragoons. Supports my belief that despite their bulk, they made it onto belts for those who really wanted/needed stopping power. The would be miner looks to be carrying a '51, along with a single shot, large knife and a pepperbox? Can't figure out what the rifle is, though...
Wish I could make out more of the firearms those Kansas boys have on. I do see a plethora of big knives including the standing guy on the far left who looks like he's carrying some sort of short sword, maybe an artillery style.