TANGO4, Designed for todays common MSR/AR and bolt action platforms 1 4x24 mm The ideal solution for CQB/mid-range tactical engagements. llumination in a 30mm one-piece maintube. Offered in first focal plane (FFP) with illuminated reticle. Dependable waterproof (IPX-7 rated for complete immersion up to 1 meter) and fog-proof performance.