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The gun as seen in Chuck Versus the Cougars

The Barcode Scanner Gun is a weapon used once by Casey in Chuck Versus the Cougars.

The gun is hidden inside a Buy More barcode scanner, allowing Casey to carry it around without it being noticed. Lifting the top of the scanner reveals the gun inside, and a notch cut in the front of the scanner allows the gun to be fired without lifting the top, thus preserving its hidden status.

It was not seen in use again.