bow

add some sort of gun which has more then one barrel (because those types of guns existed for some reason) and has way too much recoil.

Pole hammers, morning star, morning star, but on a... POLE and a few other long swords such as estocs, messers and scimitars... or one handed swords such as arming swords, daggers, sickles and so on, and you could expand towards weeb ♥♥♥♥ like katanas and wakizashi's and naginatas etc. but I'm only spitballing

And for apparel, since you're considering adding some. Hounskull bascinet, flat templar, pauldrons, vambraces, chainmail shirts and vests, chainmail coifs, arming caps, leather coifs, bronze greaves for romans, normal plate greaves, a galea helmet for romans, thracian helmets... for, well... thracians? and so on, just research into it and you should find reference images for all of these items...

Civil war era field artillery like parrott guns would be sick. Kinda like how the tank works with the physical shell that it fires but instead it would be a round shot. And also a gatling gun would be cool.

H Ö R S E

minecraft sword and poop launcher

Peacekeeper/Peacemaker revolver
Luger
Walther P38

Roman Armor

Simple one from me: Gunpowder Barrel.
An Explosive Item that acts like a grenade but with the blast power of Dynamite. (Activate it and it'll wait for a while until exploding, shooting it will instantly explode it.)

assassins creed hidden blade lol

Add a torch.

And add an excalibur.

make musket recoil less

this isint a weapon but you could add some props like 1700s military gear and rennaisance armour