### Clue: Counterfeit gun impounded by agent abroad (5)
### Answer: FAKED 
 ### Explanation: Definition: Counterfeit
 AK(or Kalashnikov, short for the AK-47 automatic rifle, one of the AK family of rifles) **contained in**(impounded by) FED(short for an agent of the Federal Bureau of Investigation, one abroad if you're not from the US).