The IRAY-AC61 Focus Assist is a compact yet highly effective upgrade for iRay MICRO-series thermal optics, giving users smoother and more precise control over their focus adjustments. Designed with a low-profile, easy-grip fin, it lets you fine-tune image clarity quickly without fumbling in the dark or shifting your sight picture. Whether you're scanning wide areas or dialing in thermal detail on distant targets, the AC61 makes the process faster, more intuitive, and more reliable. Lightweight, durable, and built to match the ruggedness of iRay’s thermal devices, it’s a simple add-on that delivers a noticeable improvement in field performance. iRayUSA MH25 Objective Focus Cat Tail IRAY-AC61