Fostech 2503-SS-5.56: This Fostech Strake Brake is everything you have been looking for in a muzzle device. This particular model is designed to fit onto .223/5.56 AR-15 rifles and features a 1/2X28 thread pitch. This model features multiple ports that expel gases rapidly, leading to reduced felt-recoil for the shooter and a much flatter shooting firearm. These ports also allow for faster follow up shots as this brake makes your AR-15 much more comfortable to control when rapid firing. This model also features a stainless steel finish and is perfect for replacing your stock muzzle device.