Pachmayr Marlin 336 Decelerator Pre Fit Recoil Pad Easy "Do-It-Yourself" installation. May require grinding or drilling. It measures 8.3 x 2.7 x 1.4 inches Proven Decelerator Recoil Reduction. Fits the Marlin 336, 336C, 336SS, 1895, 1894FG and 1894PG Lever action rifles with pistol grip wood stocks. Please look into the Installation Manual below in the Product Description.