Flintlock pistol from volume 9 of One Piece, showing Oda's diagram of a flintlock pistol.
From Volume 9 SBS.
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A flintlock is a type of gun ignition mechanism that was first introduced in about 1630. It was...
D: Sensei, I can't stop my "okay hair". How do I stop it? O: There's no need to!! The SBS begins!!