The Sig Sauer TANGO-MSR low-power variable optic has a 1-6x magnification and a 24mm front objective, giving this optic a clear and bright image. The scope is also equipped with an illuminated reticle, providing an easy-to-pick-up reticle no matter what time of day. This optic also includes the high-quality Alpha-MSR 1 scope mount. Both the scope and the mount are made of excellent aluminum and are built to provide a durable and dependable opticFeatures :High Performance 6x optical system with low dispersion glassIntegrated thread-in throw leaver for quick magnification changesIlluminated MSR BDC-6 reticle with 11x brightness levelsLay flat flip-back lens covers includedDependable waterproof, shockproof, and fog-proof performanceIncludes ALPHA-MSR one-piece aluminum cantilever mount1-6x24MM Magnification30MM Maintube DiameterSecond Focal Plane