You will need to purchase either the Gen 4 Aluminum scope mount or the Steel Gen 4. Once you register your rifle for warranty, you will be able to get a discount on either. Both mounts are picatinny style, and there is a bit of a different mounting process between the two. Don't ask me for results, right now I am having a sighting in issue, and I need to determine of it is the mount or the scope (A Vortex Viper). You can see a video on The Armory Life about mounting the aluminum base. This is the steel mount.
Regards,
Bill