Designed for today's common MSR/AR and bolt action platforms, the TANGO4 riflescope is the ideal solution for CQB/mid-range tactical engagements, 3 Gun competitions and hunting with 4x times optical zoom and illumination in a 30mm one-piece maintube. Low dispersion (LD) glass provides industry leading optical clarity for any situation. Offered in first focal plane (FFP) with multiple, illuminated reticle options. Dependable waterproof (IPX-7 rated for complete immersion up to 1 meter) and fog-proof performance. FEATURES: Offered in first focal plane (FFP) with multiple, illuminated reticle options; MOTAC™ (Motion Activated Illumination) powers up when it senses motion and powers down when it does not. Dependable waterproof (IPX-7 rated for complete immersion up to 1 meter) and fog-proof performance; LockDown™ Zero System on the TANGO4 features a resettable zero, zero-stop and auto-locks down at zero.