Selected by the U.S. Army for both the squad designated marksman rifle system and for U.S. special forces, the TANGO6T is available in the commercial market. Designed for today's common MSR/AR and bolt action platforms, this scope is the ideal solution for CQB/mid-range tactical engagements, 3 Gun competitions and hunting. The TANGO6T is complete with our HDX optical system for extreme clarity and low-light performance, HellFire fiber optic and glass-etched illuminated reticles, and first or second focal plane designs. Features: HDX optics extra low dispersion glass (ED) combined with high transmittance glass (HT) provide industry leading light transmission and optical clarity for any situation 6x super-zoom advanced optical system Fast focus eyepiece Night vision (NV) illuminated reticle settings with locking illumination dial Laser engraved mounting line to align riflescope to scope rings Dependable waterproof (IPX8 rated for complete and continuous immersion at 20 m ) and fogproof performance Power selector ring throw lever included with all models Covered by Sig Sauer's infinite guarantee and electronics limited warranty Assembled in Sig Sauer optics factory in Wilsonville, Oregon, USA Industry leading light transmission and optical clarity for any situation First focal plane (FFP) 20 MRAD travel per rotation 150 m parallax setting +/-2.5 diopter adjustment range IPX7 waterproofing Argon internal gas purge 9 daylight/2 NV illumination settings