QUESTIONS TO ASK WHEN BUYING A 2ND HAND PCP 
  
1 ask for the serial number,then ring manufacture for identity they will give you the year of model 
  
2 ask them when they purchased it,and how old it is,then put 1,2, together to see if you are dealing with some one who is legit. 
  
3 when was it last serviced.and for a chrono reading. 
  
4 how many pellet's have been through it. 
  
5 have there been any modifications to the rifle. 
  
6 and if possible do a face to face deal! and don't hand over your money, until you are completely happy with your purchase! 
  
  
i have used these tactics