Colt will ship you a box in which you can return your lower receiver assembly. This box includes a pre-printed FedEx label inside it. Just take that label off and put it over the top of the existing label on the outside of the box. Take it to any FedEx Express, in-person location – and it will be shipped to our headquarters, at Colt’s expense.
If you have a problem with shipping, please call Colt’s customer service number 1-800-971-3216 Monday through Friday between the hours of 8:30 AM and 4:30 PM EST.