Claymore
(Scottish) This cross-hilted weapon uses the statistics of a
Chakram
(Indian) This circular, bladed throwing weapon uses the statistics of a
Butterfly sword
(Chinese) These use the statistics of shortswords, and are usually wielded in pairs. They have the dual-wielding property.
Boomerang
(Aboriginal)There are many forms of boomerang. This club has the thrown property (range 100/300), and cannot be used as a melee weapon. A boomerang designed to flush out or distract prey goes a shorter distance (range 50/150), but on a miss it returns to the location it was thrown from at the end of the turn.
Revolver
When a revolver is loaded, it holds up to 6 bullets. The revolver only needs to be loaded after all of its ammunition has been fired. Loading a revolver (which holds 6 bullets) requires an action. A revolver can be used to make one ranged attack per bullet loaded into it.
Ratcheting crossbow
This crossbow has a large winding wheel affixed to its drawstring which feeds into extra machinery along the stock that catches and pulls the string back again after it is fired. Winding a ratcheting crossbow for a single bolt requires a bonus action or action, and it can be wound to prepare two bolts. Masterwork ratcheting crossbows can be prepared to fire up to four bolts, or be constructed smaller (with statistics like a hand crossbow).
Shotgun
When this weapon is used to make an attack roll with advantage, the attack becomes a critical hit if both d20 rolls would result in a hit. When this weapon is used to make an attack roll with disadvantage and only one attack roll would result in a hit, you instead deal 1d4 piercing damage (adding no bonuses to damage from ability score modifiers or enchantments)