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The following weapons were used in the television series Grimm:
The Glock 17 returns as the standard sidearm of all police officers in the Portland Police Bureau. FBI agents use them also as their main sidearm, which is prominently seen in "Bad Teeth".
The Dopppelarmbrust returns in "Bad Teeth" as the weapon used by Nick to take down Akira in his house, since it connects with the final episode of the 1st season. It's also prominently seen in the introduction, taken from "Leave it to the Beavers" while being mixed in with other screenshots.