How do I contact Sightmark Tech Support? To contact us, please submit a request or give us a call at 817-383-1163. Our hours are Monday-Friday from 8am-5pm CST. Related articles What is Sightmark's Warranty Policy? Sightmark Wraith HD/4K Series Firmware Download and Installation Guide How do I order missing or spare parts? How do I get a Return Authorization number? What is the difference in FMS and LQD?