CAT Outdoors Dirty Dave (Inconel, 1.375x24 HUB). Compact 7.62 NATO Recce suppressor optimized for Sound, Flash, Flow, Blast, and Durability using Surge Bypass technology. 5.75" length, 16.1 oz (Inconel). 1.60" diameter. Min barrel 13" (Inconel for 7.62 NATO). Designed for 13" SIG MCX-Spear platform. 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