The Nest Flash Hider is as innovative as it is effective. The unique design eliminates muzzle flash, is easy to install and this version is for .300 Blackout. Unique design eliminates muzzle flash 5/8x24 threads Does not make an audible “ping” when shooting For .300 BLKOUT Melonited Steel construction Like all Seekins Precision products, the Nest Flash Hider far surpasses standard products. The unique design swirls hot gases immediately as they exit the muzzle, extinguishing the flame to eliminate the visible flash. Built for hard use, the Nest Flash Hider is precision machined from steel and melonited to increase durability. Melonited steel makes cleaning a breeze because carbon fouling does not adhere to it. The design is engineered to eliminate the audible “ping” often associated with this configuration. The non-symmetrical design eliminates the need to time, making installation simple and hassle free. No crush or peel washers are necessary, nor special tools required. Flats machined at the rear of the Nest Flash Hider will accommodate a number of wrench styles that are readily available.