EOTECH 512 Holographic Weapon Sight - 1 Dot Speed Ring Reticle EOTECH 512.A65 - Holographic Weapon Sight in Back with 68MOA ring & 1 MOA dot reticle Mount - Compatible with both 1" Weaver and MIL-STD 1913 Rails Adjustable Brightness - The 512 has 20 brightness settings for use in any lighting scenario Water Resistant - The 512 is water resistant to 10 feet (3m) EOTECH HWS Prestige Warranty - Comes with 10 year limited warranty