TANDEMKROSS Companion Extended Magazine Bumper for Ruger 10/22 2-Pack Black. 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 Please note: this product does not come with magazines. Don't forget all TANDEMKROSS products are made in specialized factories and come with a LIFETIME guarantee Specifications for TANDEMKROSS Companion Extended Magazine Bumper Ruger 10/22: Manufacturer: TANDEMKROSS Color: Black Fabric/Material: Zytel Gun Model: Ruger 10/22 Gun Make: Ruger Features Adds grip to the bottom of the Ruger 10/22 Rotary Magazine Helps with sticky magazine removal and insertion Simple to install with screws providing a superior hold Package Contents: TANDEMKROSS Companion Extended Magazine Bumper Ruger 10/22 What firearm models does the manufacturer say TANDEMKROSS Companion Extended Magazine Bumper Ruger 10/22 is compatible with? The manufacturer suggests that TANDEMKROSS Companion Extended Magazine Bumper Ruger 10/22 is compatible with Ruger 10/22TANDEMKROSS TK18N0036BLK1: Companion Extended Magazine Bumper for Ruger 10/22 2-Pack Black