Firehouse Subs is offering a FREE Medium Chicken Gyro Sub for a limited time!! Currently, there is no purchase required even though it says “free with purchase” so you’ll want to place your order ASAP for future pickup or you may miss out. You’ll need to Firehouse app to get this offer. Click here to download the app and create an account if you don’t have one. Tap on + MORE then PROMO CODE and enter the code TRICK2G (all caps) to add this offer to your account. To redeem, add a Medium Chicken Gyro sub then go to checkout. Tap on CHECK FOR REWARD, select the FREE Med. Chicken Gyro Sub and GET FINAL TOTAL to see the amount of the sub reduced to $0.00. You can place your order now for pickup tomorrow and enjoy some free lunch or dinner. Comment below if it works for you!