The AIM 10-40X50 Rifle Scope is perfect for long range competitive shooters, target shooters and hunters. It features locking turrets, a dual-illuminated (red, green) mil-dot reticle and a side parallax turret, which helps eliminate error from apparent movement. Along with the locking turrets, the windage and elevation adjustment, 2 1/2” to 3 1/2” eye relief provides safety from heavy recoil and enables fast target acquisition. This scope is milled from one solid piece of aircraft grade aluminum to withstand constant heavy recoil and it is also fog-proof and shock-resistant. It is nitrogen charged with weather resistant seals and the green fused, multi-coated lens provides superior light transmission, resolution and scratch resistance. Included with the rifle scope are Weaver/Picatinny 1913 ring mounts.