GrovTec US Inc Hammer Extension - Marlin Model 36 and Marlin 336 -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 Model 36 Marlin (1936-1947) and Marlin 336 (1948-1956) Steel with a black finish