SIGM400 Optic Combo

Direct impingement operating system with rotating locking bolt. Nitride treated barrel. 7075 aircraft grade aluminum forged lower receiver, polymer Magpul MOE forend, grip and collapsible stock (except some state compliant models). Thirty round magazine. 1x20mm With Low Mount & QD Co-Witness High Mount Compact closed red dot sight with M1913 rail interface. Low Dispersion LD glass lens design with high performance coatings. 2 MOA red dot. Battery conserving motion sensor for automatic on/off. Battery tray. Manual brightness controls are easy-to-reach. 0.5 MOA adjustments. Waterproof and fog proof performance. Operates on CR2032 battery. Graphite finish.