TANDEMKROSS Shock Block Bolt Buffer for Ruger 10/22 Black. The TANDEMKROSS "Shock Block" Bolt Buffer is an great upgrade and is an inexpensive addition to your 10/22 rifle. Eliminates the metal-to-metal contact between the bolt and the receiver pin and eliminates vibration cause by the metal-to-metal contact. The TANDEMKROSS "Shock Block" Bolt Buffer reduces impact stress on the receiver made for high tolerances high impact resistance superior load bearing properties. The "Shock Block" Buffer comes with the TANDEMKROSS lifetime guarantee. Specifications for TANDEMKROSS Shock Block Bolt Buffer Ruger 10/22: Manufacturer: TANDEMKROSS Gun Model: Ruger 10/22 Color: Black Gun Make: Ruger Features Eliminates "Bolt-Battering" of the receiver Eliminates vibration from metal to metal contact Easy drop in ready no tools required Oil and solvent resistant Package Contents: TANDEMKROSS Shock Block Bolt Buffer Ruger 10/22 What firearm models does the manufacturer say TANDEMKROSS Shock Block Bolt Buffer Ruger 10/22 is compatible with? The manufacturer suggests that TANDEMKROSS Shock Block Bolt Buffer Ruger 10/22 is compatible with Ruger 10/22TANDEMKROSS 0118N0039BLK1: Shock Block Bolt Buffer for Ruger 10/22 Black