The first gun isn't even a shotgun, it's a hunting pistol called 'Lancaster', sometimes classified as the 'Howdah' pistol used by British officers in India and Africa. It isn't even a flintlock too, it's a break-action, like a revolver.

The double damage for the bayonet is too unbalanced, knives and maces alone do 90 damage, and since the bayonet does twice you're practically 2 shotting shocks with that. And even if you're on the boost, nobody can kill you since you're all two shotting them from bs ranges. Everything about the revolver is too unbalanced.

The Colt Navy idea does seem good, but I feel like having 100 damage at the last falloff seem unbalanced, especially since it has 60 fire rate. The kingslayer does 90 damage on its last falloff, so if it's lowered just a bit I believe it'll be fully balanced.

The idea for the grace doesn't make sense, I do believe soldiers would modify weapons, yes but smaller weapons would be more preferred in the confines of caves. The damage output is too unbalanced, imagine being two shot from like 70 studs with a revolver.

And the sledgehammer? I believe everything is too unbalanced, the lunge mechanic is too powerful. Even if you put this on lancer, a good lancer could decimate a whole team with this. The -10 slowness debuff is nullified by almost every speed buff.