March Scopes Wide Angle 4.5-28x52mm Rifle Scope With Lockable Shuriken Turrets 34mm Tube First Focal Plane FML-PDKI Reticle Black D28HV52WFIMLXPDKI. The short length and light weight of the March-FX 4.5x-28x52mm is exceptional. The new turrets are Shuriken shaped lockable elevation and windage turrets. Shuriken is a star shaped throwing knife used by Ninja. Red is for locked state and white is for unlocked state. "X" in the model name stands for the Shuriken lock. Specifications for March Scopes Wide Angle 4.5-28x52mm Rifle Scope With Lockable Shuriken Turrets 34mm Tube First Focal Plane: Manufacturer: March Scopes Objective Lens Diameter: 52 mm Magnification: 4.5 - 28 x Tube Diameter: 34 mm Reticle Focal Plane: First Focal Plane (FFP) Exit Pupil: 1.86 mm Finish: Hard Anodized Aluminium Field of View Linear: 29.1 - 4.67 ft at 100 yds Field of View Angle: 5.56 - 0.89 degrees Eye Relief: 70 - 93.7 mm Color: Black Length: 12.5 in Adjustment Type: Mil Rad Fabric/Material: Aluminium Height: 2.4 in Focus Range: 10 yds to infinity Lens Material: ED Glass Optical Coating: Multicoated Fogproof: Yes W/E Travel at 100 Yds: 30 Mil Rad Gun Type: Rifle Country of Origin: Japan Features of March Scopes Wide Angle 4.5-28x52mm Rifle Scope With Lockable Shuriken Turrets 34mm Tube First Focal Plane Scope body fully machined from aluminum ingot All Japanese metal parts with no plastic part except for minimum essentials such as an insulator Argon gas filled for internal stability Fast focus eyepiece Shuriken lock elevation and windage turrets Top quality multi lens coating where the transmittance is very near 100percent Water repellent lens coating Package Contents: March Scopes Wide Angle 4.5-28x52mm Rifle Scope With Lockable Shuriken Turrets 34mm Tube First Focal Plane Lens Cloth Hex Wrench Flip Caps Sun Shade Fast Lever Middle Wheel Large Dial Md Disk March Scopes D28HV52WFIMLXPDKI Reticle: Wide Angle 4.5-28x52mm Rifle Scope With Lockable Shuriken Turrets 34mm Tube First Focal Plane FML-PDKI Reticle Black