The CBE SL-4 Sight is an ultra-light, compact design featuring a rugged synthetic Multi-Pin Aperture. The SL-4 features an Armed Guard Fiber Management System for even brighter pins and better protection. This sight also features a Dovetail elevation gang adjustment with visual laser engraved markings. Re-engineered Smart-Mount multi-positioning mounting holes. Quick-Slide windage unit with laser engraved marking and indicator window.