Oooo i believe I have to call H PAC about that but it was tested this year so it should be 4 years if I remember correctly (to be honest I just say test that please and give em the money lol) I will find out a definite end date for you in the mornin though buddy ?? If you want to send me your address etc in a pm il send you my paypal and if your happy with the date il send in the morning ?? Let me know