You can now buy a 12 Gauge Insert Adapter to shoot cheaper 12ga Flares out of a 26.5mm Flare Pistol. US Marine 12ga signal flares are considerably cheaper than the full sized European 26.5mm flares.
Warning: Any attempt to modify this insert to accept anything other than 12ga marine flares could be a criminal act. Attempting to fire anything other than 12ga marine flares from this insert could be fatal.
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