Sig Sauer BRAVO4 4X30 MM Sight Fits M1913 Rail World’s first wide field battle sight. Radically new design for professional and civilian MSR/AR-shooters, The BRAVO4 delivers an industry leading 42% wider field of view than current battle sights. The notably flat, distortion-free image boasts an unprecedented edge-to-edge clarity by means of a combination of Low Dispersion (LD) glass and aspherical lens design. Lightweight yet durable magnesium housing with integrated Picatinny top rail for additional accessories such as MRDs and lasers. Adjustable eyepiece with +/- 2 diopter correction. Dependable IPX-8 waterproof (to 400 mbar or 13 ft) and fog-proof performance. The BRAVO4 was engineered with the centerline of the optical axis at 1.535” above the top of an M1913 Picatinny rail interface for night vision compatibility. Features: - MegaView™ system utilizes an advanced prism and ocular design yielding ?43% greater field of view than the competitive prismatic battle sights - MOTAC™ (Motion Activated Illumination) powers up when it senses motion and powers down when it does not. Provides for optimum operational safety and enhanced battery life - The notably flat, distortion-free image boasts an unprecedented edge-to-edge clarity by means of a combination of Low Dispersion (LD) glass and aspherical lens design - Adjustable eyepiece with +/- 2 diopter correction - Dependable IPX-8 waterproof (to 400 mbar or 13 ft) and fog-proof performancE Specifications: - Magnification: 4x - Objective Clear Aperture: 30 mm - Illumination: Yes - Recticle: 5.56/7.62 Horseshoe Dot - Adjustment Increments: 0.5 MOA - Battery: (1) CR2 - Color: Graphite Manufacturer: Sig Sauer MFG Number: SOB44001 UPC: 798681521272