CAT Outdoors Noah (Titanium, 1.375x24 HUB). AI-engineered 6mm suppressor optimized for 6 ARC and 5.56 NATO using Surge Bypass technology. 6.15" length, 8.6 oz (Ti) / 17.5 oz (Inconel). 1.60" diameter. Min barrel 10" (Ti) / 8" (Inconel for 5.56 NATO). Velocity range 1000-2800 ft/s. Semi-auto rated. DLC finish. Includes 5/8x24 direct thread mount. Note: If this product is reflected as in-stock it means it's either physically in-stock or allocated and available (serial number is assigned) at my distributor