Fixed Front & Rear Sights

Tactical Fixed Front & Rear Sight Streamline Design Standard AR15 Apertures Iron Sights BK Hunting accessories One Piece Streamline Design Uses Standard AR15 Apertures(A1 Sight Adjustment A2 Aperture) Easy to use in conjunction with compact, pistol-type weapon lights fit for 20 mm rail  Light weight Regular version：Mechanical machining /Baking varnish High quality version：CNC machining / Class II anodic hardening The difference between Regular version and High quality version lies in the processing method and surface paint treatment.