The Sig Sauer® WHISKEY3 3-9x40mm BDC-1 Quadplex Rifle Scope features an anodized aircraft-grade aluminum tube with O-ring seals and gas-purged optics, designed to deliver exceptional durability and reliability in harsh hunting environments. The advanced HDX™ optical system features both High Definition (ED) and High Transmittance (HT) glass for ultra-high resolution, optical performance, and light transmission for superior clarity in virtually any lighting. The BDC-1 Quadplex reticle delivers quick, intuitive target acquisition, while the SBT™ custom laser-etched elevation system allows you to correct for bullet drop, delivering pinpoint accuracy at any range. The Low Dispersion (LD) lenses feature highly efficient SpectraCoat™ and LensArmor™ abrasion-resistant lens coatings for improved durability and clarity. IPX7 waterproof.