The Ultradyne Pulse Compensator 5.56/.223 ½”x28 threads is the answer for keeping the barrel down and on target with a wide variety of calibers. Gases never even make it into the shooters line of sight, thanks to strategically located gas ports that also help keep the muzzle from rising. What does that mean for you? A gun that stays on target better, meaning follow-up shots come quicker and more accurately. The Ultradyne Pulse Compensator is constructed from 416 stainless steel, so you can trust it for years of performance and reliability. Works with standard cartridges in calibers; .223, 5.56x45 NATO, 224 Valkyrie, 224 Wby Mag, 22.250 Rem, .222 Rem Mag, 222 Rem, 22 Nosler, 220 Swift, 22 PPC, 22 Hornet, 204 Ruger, 218 Bee Minimum Barrel Thread Length - .600” 416 Stainless Steel The Ultradyne Pulse Compensator delivers a lot of performance, without being a huge addition to your rifle. Improved accuracy, reduced recoil and muzzle rise. What else could you want?