CAT Outdoors Old Dirty Bastard (Inconel, 1.375x24 HUB). 7.62x39 suppressor (rated up to 7.62 NATO) featuring Surge Bypass technology. 6.85" length, 19.5 oz (Inconel). 1.60" diameter. Min barrel 8" (Inconel for 5.56 NATO). Optimized for 16" AK47 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