If you are in Oz ,you soon learn not to buy stuff you can make in a half hour.......firing pin costs $30US.......by the time it gets to my mailbox (more in a minute) ,its cost in Oz pesos is close to $100......now this might be OK ,except that somewhere along the line ,an X Ray machine linked to a computer recognition system has identified it from a zillion item "gun parts library" ,pack is dumped into a destruction bin ,and gone....