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Mfg Item #: MP409ADAPT
The GSG-MP40P 9mm pistol converts the original M13x1 metric thread to a standard 1/2X36 thread. It allows you to attach 1/2X36 muzzle device or suppressor to your GSG-MP40P 9mm Pistol. This item does not work for GSG-MP40 .22LR rifles.