The KIDD 1022 bolt comes complete with our pinned aftermarket wire EDM firing pin and extractor. Proper headspace allows the bullet to feed properly and the correct firing pin protrusion guarantees that there is not too much or too little firing pin contact with the rim of the case. This bolt is a flawless match for any KIDD 1022 receiver without modification. You can also use it to upgrade a factory 10/22 style receiver. Specifications for KIDD Innovative Design LR Complete Bolt For Ruger 10/22 Scalloped Silver: Manufacturer: KIDD Innovative Design Condition: New Color: Silver Fabric/Material: Stainless Steel Quantity: 1 Finish: Ion Bond Scalloped Features of KIDD Innovative Design LR Complete Bolt For Ruger 10/22 CNC Machined from billet stainless steel Proper head spacing and firing pin protrustion Hardened for durability Pinned firing pin for consistent ignition, radiused for improved cycling Hand polished for smoother operation Package Contents: KIDD Innovative Design LR Complete Bolt For Ruger 10/22 Bolt Black Scalloped Bolt Firing Pin Extractor