[Autumn]

1. The weapon in question becomes a gun for the purposes of shell effects, but still feels like a melee weapon. because it has 1 range and does physical damage that targets defense, this makes playing off a spellblade with BK/MG or MG/Ghost REALLY cool as a concept, because overcharge.
(for example, playing off Blaze Shell overcharge + Narcus proc for a sword slash enchanted with fire magic to create a sear caused by a sword slash. Also gaining the utility of everything associated with shell effects)

2. The weapon in question gains the hit buffs of being a gun, +15 from Archer class, +25 from charged shot, +50 from Overcharge, combined with Flatfoot and Hanging, this makes an extremely accurate sword.

3. You gain access to Parting Shot, which still does regular damage, but now your sword has about 3 range and sends you flying back, typically how I use this is to bash someone forward, parting shot away with the sword and arrive in max Hanging range, for another +25 hit.

4. Its just a really damn cool concept for spell-blading or possibly using a gunblade(Idk if those would exist but heyyy)


Likewise I'll mention some downsides of mutating a sword into a gun.

Your weapon can now be deflected with blade barrier.(From the front at least, this can be solved by going to the side, which is quite fair considering you're now using a gun)
The weapon can be deflected with Bullet Barrier.(up to 4 times per round, and from behind too at that.)
The weapon can no longer use weapon specific skills like a sword's Sidecut and Shinken.