Seekins Precision 0011510059 Nest 223 Rem,5.56x45mm NATO Flash Hider 1/2"-28 tpi Black Melonite Steel

The Nest Flash Hider is as innovative as it is effective. The unique design eliminates muzzle flash, is easy to install. 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 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.
This model has 1/2x28 tpi threads.