Powder River Precision Survivor Series Bolt Lock with Spare Extractor for Stainless Steel. It also features an automatic bolt release function for smooth operation. If you have a 10/22 take down you know that you can easily break the extractor if you disassemble the rifle incorrectly. This is a great way to carry a spare just in case. Ruger and 10/22 are registered trademarks of Sturm Ruger & Co. Inc. Powder River Precision and its products are not affiliated or associated with Ruger. Specifications for Powder River Precision Survivor Series Bolt Locks: Manufacturer: Powder River Precision Gun Type: Rifle Gun Make: Ruger Gun Model: Ruger 10/22 Fabric/Material: Stainless Steel Color: Stainless Steel Features of Powder River Precision Survivor Series Bolt Locks Ruger 10/22 and clone models Package Contents: Powder River Precision Survivor Series Bolt Locks What firearm models does the manufacturer say Powder River Precision Survivor Series Bolt Locks is compatible with? The manufacturer says that Powder River Precision Survivor Series Bolt Locks is compatible with Ruger 10/22Powder River Precision PRP-X-1022-SSB: Survivor Series Bolt Lock with Spare Extractor for 10/22 Stainless Steel