Flash Gun

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

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

Capabilities
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. Otherwise, it is no different from a normal flintlock.

Trivia

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