Search the Marauder posts here, and you'll find a wide range of scopes being used. Most of us prefer variable power scopes with higher magnifications to make the most of its PCP long-range capability. I have a 6-24X50 on mine, and have seen where others have 32X or better glass. You don't have to use an airgun-rated scope because the Marauder doesn't have a springer's kick, and 2-piece mounts are needed to clear the magazine. AO capability with as close-in focusing as you can get is great for those shorter-range shots.