M16 Expansion Chamber - works on ANY marker that has a female thread for an expansion chamber. This means practically any Spyder, spyder clone, or Tippmann marker will be compatible. Add appearance and functionality to your marker all at once!
AK-47 Expansion Chamber - works on ANY marker that has a female thread for an expansion chamber. This means practically any Spyder, spyder clone, or Tippmann marker will be compatible. Add appearance and functionality to your marker all at once!