Leupold 115387 Mark AR MOD 1 Rifle Scope with 1.5 to 4X Magnification 20-Millimeters Black
http://www.amazon.com/gp/product/B009TBEW8C?tag=sukses2015-20
Provides superior accuracy potential
Multicoat 4 reduces glare from reflecting like that diminishes image quality
Argon and Krypton waterproofing for superior protection
Impressive 4 to 15-zoom ratio with clear images from edge to edge