Pfi Rr Evolution Scope Blk (1.25-4X24Mm) By Pfi Rapid Reticle Rapid Reticle BDC with holdovers to 600 yards (supersonic) and 350 yards (subsonic) for .300BLK and 7.62x39 with Rapid Ranging (9 /18objects) and wind holds up to 10mph Nitrogen filled one piece 30mm diameter 6061 T6 aluminum tube with matte black anodized finish Shock, fog, and water proof multi-coated lenses 1.25-4x24mm with fast focus ocular and objective parallax adjustment First focal plane reticle with true ballistic holds throughout the magnification range Positive  MOA windage and elevation clicks on low profile target type knobs with reset to zero feature 3-color illumination with intensity rheostat (red, green, blue)