The NcSTAR Euro 1.5-6x 42 mm Riflescope incorporates many unique features that differ from other scopes. Large 30 mm main tube provides greater light gathering, which enhances sighting abilities during dawn and dusk. The 30 mm tube also offers more room for a greater range of adjustment. This scope is easy to carry, even during those long treks. It offers an elite scope for even the most discriminating shooter.