Weaver Mounts 99611 Multi-Slot For Rifle Savage Axis I/II 8-40 Post 6/2021 Extended 20 MOA Matte Black Anodized Aluminum Tactical Multi-Slot Bases- Picatinny Bases Are Designed For Specific Models Of Firearms And Provide An Additional 1" Of Forward Length For More Mounting options. Manufactured From 6061-T6 Aluminum And Protected By a Matte, Type III Hard Coat anodized Finish, These Multi-Slot Bases Are Compatible With Picatinny Or Weaver Style Rings. Model: Multi-Slot Style: Extended Material: Anodized Aluminum