Fully Multi-Coated Increase light transmission with multiple anti-reflective coatings on all air-to-glass surfaces. Brightness Settings 10 levels Unlimited Eye Relief Non-critical eye relief for rapid target acquisition Parallax Free All red dot and holographic sights will exhibit some small amount of parallax. Matching current industry practice, this small amount would be considered "parallax free" and will make a negligible difference in performance.

Fully Multi-Coated Increase light transmission with multiple anti-reflective coatings on all air-to-glass surfaces. Brightness Settings 11 Levels Unlimited Eye Relief Non-critical eye relief for rapid target acquisition Parallax Free All red dot and holographic sights will exhibit some small amount of parallax. Matching current industry practice, this small amount would be considered "parallax free" and will make a negligible difference in performance. Night-Vision Compatibility The lowest 2 settings are night-vision compatible.

BCM® KeyMod™ 5.5 Inch Picatinny Rail Section, Nylon

Fully Multi-Coated Increase light transmission with multiple anti-reflective coatings on all air-to-glass surfaces.

BCM® KeyMod™ 3 inch Picatinny Rail Section, Aluminum

Fully Multi-Coated Proprietary coatings increase light transmission with multiple anti-reflective coatings on all air-to-glass surfaces.

BCM® KeyMod™ 4 inch Picatinny Rail Section, Aluminum

BCM® KeyMod™ 5.5 inch Picatinny Rail Section, Aluminum

BCM® 3 inch Picatinny Rail Section, Aluminum (M-LOK® Compatible*)

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. XR™ Fully Multi-Coated Proprietary coatings increase light transmission with multiple anti-reflective coatings on all air-to-glass surfaces. Dielectric Coating Multi-layer prism coatings provide bright, clear, color-accurate images. Phase Correction Coating on roof prism models enhances resolution and contrast.

BCM® 3 inch Picatinny Rail Section, Nylon - Black (M-LOK® Compatible*)

One device. All the range and ballistic data you need to make the shot of a lifetime, every time. For precision shooters and long-range hunters, the fully loaded Razor® HD 4000 GB accelerates your speed to target, helping you range with first-shot confidence at pushbutton speed. Rugged. Reliable. Whether targeting a trophy above the treeline, across an open prairie, or ringing steel out to 4000 yards, the Razor® HD 4000 GB delivers all the range, ballistic, and environmental data you need for absolute accuracy when and wherever opportunity happens. XR™ Plus Fully Multi-Coated Ultimate anti-reflective coatings on all air-to-glass surfaces provide maximum light transmission for peak clarity and the pinnacle of low-light performance.

BCM­® KeyMod™ Rail Panel Kit, 5.5-inch BLACK ***(FIVE Pack!)***