This is serious, state-of-the-art technology for competitive shooters and tactical operators. The XTR II 4-20x50 mm riflescope features a 5-times zoom system and 25% thicker tube construction than the original XTR Riflescope. The front focal plane reticle design on this and all high-magnification XTR II riflescopes allows the reticle size to increase or decrease as magnification is increased or decreased. Trajectory compensation is always correct and proportional for the selected power setting. This reticle design is also called first focal plane or FFP. It has dimensionally-matched precision adjustment knobs and Zero Click Stop technology. High-performance optics offer Hi-Lume multi-coated lenses. The lenses optimize target resolution, contrast, and low-light performance. All hand-fitted internal assemblies are triple spring-tensioned for absolute shock proofing, even under severe recoil. They are vibration resistant, even on extended vehicular patrols. Features:- Designed for serious, technical, long-range precision rifle shooters-both tactical and competitive- Front focal plane reticle design allows the reticle size to increase or decrease as magnification is increased or decreased; trajectory compensation is always correct and proportional for the selected power setting; also called first focal plane or FFP- Features: Side focus and parallax adjustment for improved accuracy at long distances- 34 mm body tube- Excellent resolution optics and tactical-appropriate reticles and adjustment knobs make it easier to identify targets and adjust for wind age and elevation- Versatile 5-times zoom system allows for a larger field of view at close ranges and better target acquisition at long ranges- Zero Click Stop adjustment knobs let you quickly and easily revert back to the original yardage setting without counting clicks AR-15 Accessory: Y Type Of Scope: Tactical Rifle Power: 4-20 Tube Diameter: 34MM Field Of View AT 100 YARDS: N/A Finish: Black Matte Weight In OUNCES: 30.9000 Length In INCHES: 14.9000 Front Lens In MM: 50 Adj Parallax: N Target Turrets: N Lens Caps Included: N Type Of Reticle: Horus H-591 Side PARALLEX Adj: N Locking Turrets: N Includes Rings: N