GrovTec US Inc Hammer Extension - Ruger Blackhawk, H&R Topper, and New England Firearms Handi-Rifle - Adding a horizontal extension to hammers provides a larger contact surface and outstanding grip and control. Especially useful on scoped firearms where clearance can become an issue, GrovTec hammer extensions are made with the finest materials and finish in the industry. Can be mounted on the right or left side. Each hammer extension is specific to the firearms it fits. Fits Ruger Blackhawk, H&R Topper, and New England Firearms Handi Rifle Steel with a black finish