These extended magazine bumpers for the RugerA(R) 10/22 and Ruger American Rimfire are a must have for anyone that knows how easy it is to get a magazine stuck in the magazine well! Made out of nearly indestructible Zytel and designed to work with the standard 10-round Ruger rotary magazines, the "Companion" magazine extension will provide years of enjoyable service. Eliminate fumbling to remove the magazine and make gripping it easier with a two-pack of TandemKross "Companion" Magazine Bumpers! Notes: This product does not come with magazines.FeaturesAdds grip to the bottom of the Ruger 10/22 Rotary MagazineHelps with sticky magazine removal and insertionSimple to install with screws providing a superior hold