The Witt Machine & Tool Co Freakin45 .45 caliber suppressor combines a 4-inch ultra-compact profile with durable 416 stainless steel construction. Graphite black Cerakote provides a protective finish for compatible rifle and pistol applications.With a .578x28 thread pitch, 1.625-inch diameter, and 13.7-ounce weight, it is designed to minimize blowback through the charging handle. Manufacturer-stated full-auto rating; no barrel-length restriction..45 caliber compatibility; 4-inch overall length.416 stainless steel; graphite black Cerakote finish..578x28 mounting thread; 1.625-inch diameter; 13.7 ounces.Manufacturer-rated full-auto; no barrel-length restriction.FFL transfer required.A compact, robust suppressor option for properly equipped compatible platforms.