@S121
What I mean by him being a sniper, and being a rival for Eleos is because even if Chung's Silver Shooters are handguns. They still serve the role of sniper rifles in the game as they have good range (better then most with or without the Remodel Rifle passive.) They are the closest thing to a sniper rifle in Elsword. What I meant as for a rival of sorts for Eleos is that Chung's Deadly Chaser class is incredibly accurate with the Silver Shooters. Capable of firing a barrage of rockets from his Destroyer, freezing them in place, tossing his Destroyer into the air, then shooting every single rocket to make them explode all in the time it takes for the Destroyer to fall down is a pretty skilled sharpshooter. Definitely able to take on Eleos in a duel.
Also the size of them are I think the size of your standard magnum type revolver. I THINK. I'm not too familiar with guns.
Here is a picture of them though:(Sorry it's small)

They also don't need to reload I believe since they are enchanted revolvers (and they don't use ammo in the game, instead they use MP.) The clip size I believe would probably be about 6 rounds if they weren't enchanted. They can also apparantly be charged with more magic to perform even more powerful blasts (though you can't do it yourself, but judging by the Sharpshooter Syndrome skill of the Deadly Chaser one can use their own magic to amplify the power of one.)
Sharpshooter Syndrome:
http://www.youtube.com/watch?feature=player_embedded&v=bfWgL7lRZ6wIt's described as:
"Chung fires the Silver Shooter towards the sky to create a windblast that pulls enemies in and release a silver aura that affects all party members in the radius by temporarily increasing the accuracy and critical hit rate of all party members including yourself."