Bergara Rifles BA0011 Omni #1 Directional Muzzle Brake, 5/8"-24 tpi Threads, 30 Cal
https://www.tandktactical.com/shop/043125000210-bergara-rifles-ba0011-omni-1-directional-muzzle-brake-5-8-24-tpi-threads-30-cal-21059
https://www.tandktactical.com/web/image/product.template/21059/image_1920?unique=fbc40d3
This Omni muzzle brake is compatible with Bergara Ridge, Approach, HMR Pro, and LRP models. It has a .750" outer diameter.
