The Mark IMS Bolt-Action 20 MOA Mount is Leupold's newest top-of-the-line mounting solution for scopes with a 35mm tube diameter. The Mark IMS 35mm Mount's one piece machined design makes it incredibly strong and rugged ensuring the mount will preform flawlessly even under the most brutal conditions. The mount uses a heavy 2 bolt design that allows for quick and repeatable installation and removal.