Bravo Grip Weight:Designed to slide into the unused space in your Bravo grip this weight will help balance out your forward heavy rifle while helping dampen felt recoil. Adding or removing The Bravo Grip Weight only requires removing the Grip Cover. Restrictions: Bravo Chassis and 10/22 Bravo Rimfire only. Note: Includes O-ring for chassis with a loose fit. The 10/22 Bravo generally fits tighter and may require some fitting to fully seat. Weight: 13.6oz Material: Steel