Sig Sauer's line of TANGO-MSR Low Power Variable Riflescopes have been the winner's of three consecutive U.S. Military contracts: the Squad Designated Marksman Riflescope (SDMR) the Squad Variable Powered Scope (S-VPS) and the Direct View Optic (DVO) programs. They ship with the ALPHA-MSR cantilever mount and come with exclusive features such as flip-back lens covers a removable thread-in throw leaver and eleven illumination settings.To ensure accurate target engagement at extended ranges the TANGO-MSR is equipped with the BDC reticle. This reticle is composed of a free-floating dot in the center of a semi-circle that sits atop a pyramid structure of hash marks a holdover points to accurately compensate for bullet drop and wind drift. High Performance 10x optical system with low dispersion glass Integrated thread in throw leaver for quick magnification changes Illuminated MSR BDC-10 reticle with 11x brightness levels Lay flat flip-back lens covers included Dependable waterproof shockproof and fog-proof performance Includes ALPHA-MSR 1 piece aluminum cantilever mount