VORTEX CROSSFIRE II 3-9X50MM SFP RIFLE SCOPE High performance meets economical. Clear, tough, and bright, our popular CrossfireA(R) II line is built to exceed the performance standards of similarly priced riflescopes. Long eye relief, a fast-focus eyepiece, fully multi-coated lenses, and resettable MOA turrets are hallmarks of the series. FEATURES: SD Optical System: High-quality optical system reduces chromatic aberration and delivers clean, bright, sharp images. Fully Multi-Coated Lenses: Anti-reflective coatings on all air-to-glass surfaces provide increased light transmission for greater clarity and low-light performance. Nitrogen Gas Mfg: Vortex Optics