Optimized for precision accuracy with .300BLK rounds! - The superior option for specific rounds is a PFI RR Evolution BLK 1.25-4x24mm Scope. This is the only optic available dedicated to both .300BLK and 7.62x39 ammo. The advanced optics use Rapid Reticle BDC for holdovers out to 600 yards for supersonic ammo and 350 yards for subsonic as well as instant ranging on 9" and 18" objects without the need for manual adjustments. The rigid one-piece 30mm 6061 T6 aluminum tube, effective 1.25-4x magnification range, impeccable BK-7 glass, and fast focus ocular will impress experienced as well as novice shooters. FFP illuminated BDC Rapid Ranging Reticle with 3-color illumination has holdovers to 600 yards; Rapid Ranging on 9" and 18" objects let you focus fast without the need for manual adjustments; Multi-coated lens uses BK-7 glass and a large objective lens to make the most of available light at dusk and dawn; Rigid 30mm aluminum tube has a matte black anodized finish; Flip-up covers protect the multi coated lens when not in use; Finger adjustable 1/2 MOA windage and elevation clicks on the low profile target turrets use a built-in reset-to-zero feature; Magnification: 1.25-4x; Objective Lens Diameter: 24mm; Reticle: Glass-etched FFP Rapid Ranging BDC; Illuminated: Yes. 3-color illumination with adjustable rheostat; Battery: CR2032 3V (not included); Eye Relief: 4.4-3"; Field of View @ 100 yds.: 112.12' at 1.25X, 26.5 at 4X; Tube Size: 30mm; Turret Style: Target; Adjustment Gradation: 1/2 MOA; Waterproof: Yes; Fog-proof: Yes; Length: 10.2"; Weight: 16.68 oz.; Mfg. Number: X-RRE300BLK.