The Sig Sauer ROMEO-MSR is a sealed compact red dot or green dot sight intended for MSR,, carbine, shotgun, and air rifle. Brightness is adjusted with a top-mounted rotary dial, featuring 10 daytime and 2-night vision settings for quick target engagement in any condition. Micro size with macro features. Introducing the JULIET3-MICRO Magnifier. This ultra-compact and lightweight magnifier feature an aircraft-grade CNC aluminum housing and durable, dependable IPX-7 waterproof and fog-proof performance. With its high-performance Dielectric coated prism, the JULIET3-MICRO Magnifier provides excellent light transmission giving you complete clarity when you need it most. ROMEO-MSR Features: High-performance lens coatings for excellent light transmission and dot contrast in any situation. Ultra-compact size and weight with unlimited eye relief and parallax-free operation. Precise 2 MOA Dot Slipover, see-through flip-backs 1.41" T10 Torx M1913 Skeletonized lightweight Riser Mount for absolute co-witness Top loading battery compartment with integral brightness control featuring 10 daytime and 2 NV settings Over 20,000 hours runtime on a CR1632 battery Aircraft-grade aluminum housing and mount Dependable IPX-7 waterproof and fog-proof performance JULIET3-MICRO Features: High-Performance Lens Coatings Including Dielectric Coated Prism for Excellent Light Transmission Ultra-compact Size and Weight Aircraft-grade CNC aluminum housing ensures a lifetime of reliable service 90Adeg Push-Button Flip-to-Side Magnifier Mount Dependable IPX-7 Waterproof and Fogproof Performance Infinite Guarantee