Sig Sauer Electro-Optics Sor5105 Romeo5 Gen Ii Standard I-Beam Mount Black 1X 20 Mm Quad Ballistic Circle Dot 2.0 ReticleSig Sauer$199.99
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Sig Sauer
The Sig Sauer Romeo5 Gen II is a 1x red dot sight built for shooters who need fast target acquisition without magnification. Mounted in the included 1.93" I-Beam configuration, this sight sits high enough for a heads-up shooting posture and maintains clearance over most backup iron sights. It's designed for tactical rifles, modern sporting rifles, and shotguns where quick, instinctive aiming matters more than precision zoom. The Gen II updates the original Romeo5 with a streamlined housing, recessed windage and elevation dials for snag-free operation, and expanded brightness controls—12 settings total: 10 for daylight use and 2 dedicated night vision modes.
The Quad Ballistic Circle Dot 2.0 reticle is purpose-built for both close-range engagement and extended-distance work. A 1 MOA center dot provides surgical precision on tight targets, while four holdover points at 0.7 MOA assist with first and second round impacts at longer range—useful for hunters and range shooters who want one optic to cover multiple distances. The reticle illuminates red and responds to ambient light with Sig's MOTAC (Motion Activated Illumination) feature, so it powers down when the gun sits idle and wakes when you move. A single CR2032 battery delivers 40,000 hours of runtime—roughly 4.5 years of continuous use.
Optically, the Romeo5 Gen II uses a redesigned Mangin lens system for edge-to-edge clarity and employs a parallax-free design, meaning the reticle stays true regardless of head position or eye relief. Its 20 mm clear aperture and 1x magnification keep the sight picture bright and unobstructed in low light. The housing meets IPX-7 waterproof standards and resists fog, making it reliable in rain, brush, and wet conditions. At 5.5 ounces without battery, it won't burden a rifle's balance or handling.
| Brand | Sig Sauer |
| Model | Romeo5 Gen II |
| Color | Black |
| Magnification | 1x |
| Objective Lens Diameter | 20 mm |
| Reticle Type | Quad Ballistic Circle Dot 2.0 (Red) |
| Mount Height | 1.93" (Tall I-Beam Mount) |
| Overall Length | 2.7" (69.7 mm) |
| Overall Width | 1.6" (39.6 mm) |
| Height | 2.8" (70.7 mm) |
| Weight | 5.5 oz (without battery) |
| Illumination Settings | 12 (10 Daytime + 2 Night Vision) |
| Battery | 1 × CR2032 |
| Runtime | 40,000 hours |
| Waterproof Rating | IPX-7 |
The 1.93" height is a tall mount that clears most backup iron sights, but the supplied specs note an "Absolute Co-Witness" configuration is available as an option. If you need true co-witness (sights aligned at the same plane), confirm your specific rifle setup. The 1.93" mount provides clearance for heads-up posture and dynamic movement, which many shooters prefer.
This sight ships with the 1.93" I-Beam mount already attached. You'll need to supply a CR2032 battery for operation (one battery is required).
Yes. The Romeo5 Gen II features 10 daytime brightness settings that scale to ambient light, including settings suitable for overcast or shaded conditions. It also has 2 dedicated night vision modes if you're using night vision goggles. The MOTAC feature automatically dims the reticle when the rifle sits still and brightens it when you move, conserving battery in the field.
This is a rifle-mounted red dot sight with a 1x magnification and 20 mm objective lens, designed for rifle and carbine platforms. Shotgun and handgun compatibility depends on your specific gun's mounting system and rail interface. Consult your firearm's manual or speak with a specialist to confirm rail compatibility.
Sig Sauer
The Sig Sauer Romeo5 Gen II is a 1x red dot sight built for shooters who need fast target acquisition without magnification. Mounted in the included 1.93" I-Beam configuration, this sight sits high enough for a heads-up shooting posture and maintains clearance over most backup iron sights. It's designed for tactical rifles, modern sporting rifles, and shotguns where quick, instinctive aiming matters more than precision zoom. The Gen II updates the original Romeo5 with a streamlined housing, recessed windage and elevation dials for snag-free operation, and expanded brightness controls—12 settings total: 10 for daylight use and 2 dedicated night vision modes.
The Quad Ballistic Circle Dot 2.0 reticle is purpose-built for both close-range engagement and extended-distance work. A 1 MOA center dot provides surgical precision on tight targets, while four holdover points at 0.7 MOA assist with first and second round impacts at longer range—useful for hunters and range shooters who want one optic to cover multiple distances. The reticle illuminates red and responds to ambient light with Sig's MOTAC (Motion Activated Illumination) feature, so it powers down when the gun sits idle and wakes when you move. A single CR2032 battery delivers 40,000 hours of runtime—roughly 4.5 years of continuous use.
Optically, the Romeo5 Gen II uses a redesigned Mangin lens system for edge-to-edge clarity and employs a parallax-free design, meaning the reticle stays true regardless of head position or eye relief. Its 20 mm clear aperture and 1x magnification keep the sight picture bright and unobstructed in low light. The housing meets IPX-7 waterproof standards and resists fog, making it reliable in rain, brush, and wet conditions. At 5.5 ounces without battery, it won't burden a rifle's balance or handling.
| Brand | Sig Sauer |
| Model | Romeo5 Gen II |
| Color | Black |
| Magnification | 1x |
| Objective Lens Diameter | 20 mm |
| Reticle Type | Quad Ballistic Circle Dot 2.0 (Red) |
| Mount Height | 1.93" (Tall I-Beam Mount) |
| Overall Length | 2.7" (69.7 mm) |
| Overall Width | 1.6" (39.6 mm) |
| Height | 2.8" (70.7 mm) |
| Weight | 5.5 oz (without battery) |
| Illumination Settings | 12 (10 Daytime + 2 Night Vision) |
| Battery | 1 × CR2032 |
| Runtime | 40,000 hours |
| Waterproof Rating | IPX-7 |
The 1.93" height is a tall mount that clears most backup iron sights, but the supplied specs note an "Absolute Co-Witness" configuration is available as an option. If you need true co-witness (sights aligned at the same plane), confirm your specific rifle setup. The 1.93" mount provides clearance for heads-up posture and dynamic movement, which many shooters prefer.
This sight ships with the 1.93" I-Beam mount already attached. You'll need to supply a CR2032 battery for operation (one battery is required).
Yes. The Romeo5 Gen II features 10 daytime brightness settings that scale to ambient light, including settings suitable for overcast or shaded conditions. It also has 2 dedicated night vision modes if you're using night vision goggles. The MOTAC feature automatically dims the reticle when the rifle sits still and brightens it when you move, conserving battery in the field.
This is a rifle-mounted red dot sight with a 1x magnification and 20 mm objective lens, designed for rifle and carbine platforms. Shotgun and handgun compatibility depends on your specific gun's mounting system and rail interface. Consult your firearm's manual or speak with a specialist to confirm rail compatibility.