GrovTec US Inc Hammer Extension - Merlin Lever Actions (Post 1983) - 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 All Marlin Lever Actions made in 1983 & later including 39A, 39M, 1894, 1894C, 1895S, 336C, 336T, 375, 444S, Glenfield 30A Steel with a black finish