The Browning Recoil Hawg ranks among the most effective muzzle brakes in the industry. It reduces muzzle jump significantly to keep the target in your scope. The Standard Recoil Hawg will fit most bull and heavy-sporter profile rifle barrels with a minimum barrel shoulder of .700" and a 5/8"-24 TPI or 1/2"-28 TPI threaded muzzle. The Standard Recoil Hawg fits Long Range and Varmint/Target models of X-Bolt/X-Bolt 2 Rifles. Specifications for Browning Recoil Hawg Muzzle Brakes: Manufacturer: Browning Length: 2.2 in Condition: New Width: 1 in Features of Browning Recoil Hawg Muzzle Brake Multi-port design reduces felt recoil up to 76% (depending on caliber) Top and side ports direct gases to reduce muzzle rise Closed bottom design helps reduce dust signature during firing Rugged all-steel construction Multi-caliber design that is suitable for rifles that are .30 caliber or smaller. Package Contents: Browning Recoil Hawg Muzzle Brake