Aero Precision LAHAR-30, Suppressor, 300WIN, Direct Thread 5/8-24, 17-4 Stainless Steel Construction, No Barrel Length Restrictions, Flat Dark Earth APRS100209C The Lahar-30 is a full-auto and magnum rated with no barrel length restrictions. It features a fully laser welded, hybrid construction made up of 17-4 stainless steel with and Inconel blast baffle. A wire EDM bore ensures perfect concentricity and consistency. Industry standard 1-3/8x24 TPI threads allow for the use of direct thread adaptors, the Aero Precision Mantle Quick Detach System and other common QD adapters using this thread pitch.