Vortex Crossfire HD 1-4x24 IR Riflescope. The Crossfire® HD 1-4x24 is your go-to for close- to mid-range hunting. Quick target acquisition. Lightweight handling. Illuminated center dot. It’s a LPVO versatile enough for any rifle where agility matters. Features HD Optical System Optimized with select glass elements to deliver exceptional resolution, cut chromatic aberration, and provide outstanding color fidelity, edge-to-edge sharpness, and light transmission. Illuminated Reticle Provides precise aiming under low-light conditions. Fully Multi-Coated Lenses Anti-reflective coatings on all air-to-glass surfaces provide increased light transmission for greater clarity and low-light performance. Fast-Focus Eyepiece Allows quick and easy reticle focusing. Aircraft Grade Aluminum Constructed from a solid block of aircraft-grade aluminum for strength and rigidity. Low-Glare Matte Black Anodize Corrosion and wear resistant anodization provides low-glare matte surface and helps camouflage the shooter's position. Waterproof Designed to withstand harsh weather conditions. Fogproof Designed to withstand a wide range of temperatures. Shockproof Designed to withstand the highest levels of recoil and impact.