Volquartsen Firearms Ruger 10/22 and 22LR Automatic Bolt Release Black. These AR15 Bolt Catches & Releases from the innovators at Volquartsen Firearms feature easy to install drop-in construction that can be easily put on yourself or with the help of a licensed gunsmith. With a built in locking mechanism the Volquartsen Firearms 10/22 and 22LR Bolt Release eliminates the need to push up on your firearm. Engineered to factory made specifications the Volquartsen Firearms Automatic Bolt Release is compatible with a wide selection of makes and models. Specifications for Volquartsen Firearms Ruger 10/22 and 22LR Automatic Bolt Release: Manufacturer: Volquartsen Firearms Gun Model: Ruger 10/22 Included Accessories: Standard Condition: New Country of Origin: USA Gun Make: Ruger Features of Volquartsen Firearms Ruger Automatic Bolt Release 2PG-BCR-VLQBRR Drop-in installation Push up bolt lock Package Contents: Volquartsen Firearms Ruger 10/22 and 22LR Automatic Bolt Release 2PG-BCR-VLQBRR What firearm models does the manufacturer say Volquartsen Firearms Ruger 10/22 and 22LR Automatic Bolt Release is compatible with? The manufacturer says that Volquartsen Firearms Ruger 10/22 and 22LR Automatic Bolt Release is compatible with Ruger 10/22Volquartsen Firearms VC10BR-B-10: Ruger 10/22 and 22LR Automatic Bolt Release Black