Building Fire Hammer Lock for WA M4 GBB


  • Model: AS5150
  • Manufactured by: Building Fire


  • Building Fire Hammer Lock Upgrade Parts.
  • Metal construction.
  • Direct replacement of Western Arms M4A1 Hammer Lock (Part No.119).
  • Suitable for WA/G&P WOC M4 series airsoft GBB rifle.


  • Building Fire model no. - EP-37
  • Color - Black
  • Weight - 15g
  • Material - Metal
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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.