Building Fire Steel Firing Pin for WA M4 GBB


  • Model: AS5161
  • Manufactured by: Building Fire


  • Building Fire Steel Firing Pin.
  • Steel Construction.
  • As many round fired from the rifle, the stock one will get old.
  • Design for Replace the Original Firing Pin.
  • Suitable for WA M4 Series Airsoft Gas Blow Black GBB Rifle.


  • Building Fire model no. - EP-40
  • Color - Black
  • Weight - 15g
  • Material - Steel
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    This product was added to our catalog on Friday 14 September, 2012.

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    Disclaimer: All airsoft guns, gas blowback guns, spring guns are NOT real firearms. All airsoft guns sold to US customers are affixed with an orange tip permanently.