The Aim Sports Tri-Illuminated XPF First Focal Plane Scope is milled from one solid piece of aircraft grade aluminum to withstand constant heavy recoil. It is fog proof and is nitrogen charged with weather resistant seals. The green fused multi-coated lens provides superior light transmission, resolution and scratch resistance. It has tri-illuminated (red, green, blue) first focal plan, laser-etched reticles with adjustable rheostat for brightness control and long distance accuracy. The scope has 3.5 inch eye relief that provides safety from heavy recoil and enables fast target acquisition. It comes with Weaver/Picatinny 1913 ring mounts.