Ruger

Reduces recoil by as much as 58% (depending on caliber and barrel length) contributing to improved accuracy over a longer string of fire - Brake locks into position using an easy-to-use external jam nut - Reduces noise and blast to the sides of the shooter - Installs quickly using a 7/8 box wrench or crescent wrench - Manufactured from alloy steel with a matte black finish - Fits all Ruger Precision Rifle calibers (308 Win 6.5 Creedmoor and 243 Win) Threads: 5/8-24 - Dimensions: 2.2 length 1.0 diameter - Weight: 3.2 ounces - Made in the USA.