William, being a police trade in, there would be no warranty with this gun. Glock's warranty is for 1 year, and it is highly unlikely it is less than a year old. Bud's does not include a warranty with used guns.

Hi William and welcome. I would contact Glock Customer Service on any potential warranty details since used at (770) 432-1202 ------------ https://us.glock.com/en/own/warranty#:~:text=To%20make%20a%20claim%20under,how%20to%20return%20your%20pistol.