Liberty Precision Machine Anthem 2 .30 K (Short stainless, Rearden Atlas). .30 caliber rifle silencer with progressive baffle design. 1.74" diameter, 5.5" long, 11.8 oz (without mount). Full-auto rated. No barrel restrictions on .30 cal or less. Graphite Black Cerakote. Includes Rearden Atlas thread adapter, 1/2-28 Eclipse flash hider, and 5/8-24 Liberty Bell muzzle brake. Lifetime warranty. 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