Trace heavy-duty aspherical lens optic (H.A.L.O) reflex sight excels in extreme conditions with its waterproof shockproof and fog-proof design. It features a 3 MOA Red Dot reticle with ten brightness settings including options for night vision; wide field of view; top-loading battery design the sight keeps alignment and zero uninterrupted during battery changes. Includes rubber slip on storage cover Picatinny rail adapter Torx wrench sight adjustment tool and lens cloth.