Christensen Arms Scope Mounts - Lightweight Scope Rings and Base : Talley Manufacturing
How To Raise MOA With Scope Shims | An NRA Shooting Sports Journal
Ring Inserts - 30mm to 1 inch: GG&G
Signature Rings™ | Burris Optics
360 Tactical 30mm Heavy Duty Hex Shape Rifle Scope Rings W/1" Inserts High Rise Weaver Style Heavy Duty Ring with 1" Scope Ring Adapter Reducer Spacer Shim 5/8" Wide Set of 2
How To Raise MOA With Scope Shims | An NRA Shooting Sports Journal
Shims for a Scope | Mad Ogre
How to attach shims to your rifle scope - Shooting UK