Volquartsen Firearms OpticsPlanet Exclusive Automatic Bolt Release and Bolt Tune-Up Kit & KIDD Innovative Design LR Bolt Buffer For Ruger 10/22 Black. This eliminates the need to push up on the bolt lock mechanism to release the bolt. This is an easy drop-in installation. Available in silver or black. Please note: bolt release is only compatible with Volquartsen and Ruger factory bolts and trigger guards including the BX-Trigger. It is not compatible with other manufacturers parts. The Volquartsen Bolt Tune-Up Kit for the Ruger 10/22 (22 LR model only) rifle contains two of our most popular items ever: the Exact Edge Extractor and our SureStrike Firing Pin. This kit is designed to eliminate light hits and stovepipes. Specifications for Volquartsen Firearms OpticsPlanet Exclusive Ruger 10/22 Automatic Bolt Release and Bolt Tune-Up Kit Bundle: Manufacturer: Volquartsen Firearms Gun Model: Ruger 10/22 Features of OpticsPlanet Exclusive Volquartsen Firearms Ruger 10/22 Automatic Bolt Release and Bolt Tune-Up Kit Bundle Marked variants are available exclusively from OpticsPlanet Package Contents: Volquartsen Firearms OpticsPlanet Exclusive Ruger 10/22 Automatic Bolt Release and Bolt Tune-Up Kit Bundle What firearm models does the manufacturer say Volquartsen Firearms OpticsPlanet Exclusive Ruger 10/22 Automatic Bolt Release and Bolt Tune-Up Kit Bundle is compatible with? The manufacturer suggests that Volquartsen Firearms OpticsPlanet Exclusive Ruger 10/22 Automatic Bolt Release and Bolt Tune-Up Kit Bundle is compatible with Ruger 10/22Volquartsen Firearms VF10B01-KIT3: Volquartsen Firearms OpticsPlanet Exclusive Automatic Bolt Release and Bolt Tune-Up Kit & KIDD Innovative Design LR Bolt Buffer For Ruger 10/22 Black