LSI 4-16 30MM First Focal Plane 44MM Fully Mutil-Coated Nikko Stirling introduces the new Diamond FFP riflescopes. First Focal Plane (FFP) optics allow for shot corrections via the reticle at any magnification with the corresponding 1/10 MIL click value. The rugged 30mm main body tube delivers the maximum range of adjustment clarity and brightness for uncompromised performance and excellent field of view- even in low light. - First focal plane - Image & reticle increase in same proportion - 1/10 MIL increments (1cm@100m) military standard - Compact length - Parallax turret includes illumination unit - Side-parallax adjustment starting from 10 yds - Glass-etched illuminated skeleton HMD reticle - Waterproof shockproof & nitrogen filled - Microlux ETE GEN III glass coatings - Fully multi-coated - Limited Lifetime Warranty