SIG GSG Firefly (mosquito) Firing Pin


  • 17-4 Stainless Firing Pin
  • Fits Sig Mosquito and GSG Firefly
  • Lifetime Warranty against failure!


Our replacement firing pin is machined from 17-4 Stainless and heat treated for hardness. We have improved upon the factory pin to ensure reliable ignition and durability. Drops in without any modification and all factory safety mechanisms are retained

Additional information

Weight 1 oz


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