All XS Sights products are protected by our No Questions Asked Warranty. We will replace the product if it becomes damaged in any way or if the tritium stops glowing prior to 10 years. 30-Day Satisfaction Guarantee: Try a new set of night sights risk free for 30 days. If you are dissatisfied with your purchase you can 1. Exchange the sights for a different available option 2. Return the product to the point of purchase for a refund. Sights that have been installed and test fired qualify for this program. Products must be purchased through XSSIGHTS.COM or a participating dealer partner. All dissatisfied products must be returned. Sight installation fees incurred are not subject for refund. Return shipping is payed by the customer. For assistance email firstname.lastname@example.org or call (888) 744-4880.