Hammers Compact 3-9X42GDT Compact Short Riflex 40mm 3-9x42GDT with Extended Eye Relief, Rings, Ard Anti-Reflection Filter, Flip Open Lens Caps, Anodized Matte Black A compact scope of variable 3x-9x power and good field of view Extended 4 inch Eye relief great for forward mounting on flat top Includes screw-on ARD anti-reflection device lens filter and Weaver rings of optimal height for Use on flat top Red/blue two color illuminated mil dot reticle 1 inch main tube with finger adjustable turret screws