Flash Gun

Flash Guns are dual-barreled flintlocks with a Flash Dial installed within.

Appearance
A Flash Gun is an ornate-designed obsidian black flintlock with dual-barrels. A Flash Dial is installed inside it.

Abilities
By opening fire, the pistol also releases a bright flash of light, due to the installed Flash Dial, allowing it to blind the targets, so they cannot see the incoming bullets, thus leaving them more vulnerable.

Trivia

 * In the anime, the guns wielded by Curiel produce a bright flash, in the same manner as the Flash Guns.