![M9×0.75 RH (female) to 1/2″×28 RH (male) Thread Adapter w/ Protector [FOR: SIG MOSQUITO, GSG FIREFLY, MAUSER M20] – SKU#047](https://fasarms.com/wp-content/uploads/2026/02/sigb-1-scaled-500x500-1.jpg)
Description
M9×0.75 RH (female) to 1/2″×28 RH (male) Thread Adapter w/ Protector [FOR: SIG MOSQUITO, GSG FIREFLY, MAUSER M20] – SKU#047
Barrel Thread (female)
M9×0.75, Right Hand (RH)
Muzzle Thread (male)
1/2″×28, Right Hand (RH)
Firearm Specific
GSG Firefly, Mauser M20, SIG Mosquito
Material
4140 Chromoly
Finish
Black Oxide (“Blued”)
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