Thank you for your recent inquiry with The Home Depot. Unfortunately, I need more information from you in order to properly address your question. I was not able to see Model #L338 online to find a compatible tip. If the gun is sold in the Home Depot store you could reach out to your local Home Depot store for assistance. For any other questions, please call us at HomeDepot.com Customer Service 800-430-3376. Thank you for shopping Home Depot.