The OSight K 6 MOA Green Dot Open Reflex Sight (OSight part no. OSIGHT-K-GN) is a compact, affordable optic built to drop straight onto any slide cut for the RMSc footprint. The 6 MOA green dot stands out sharply against bright backgrounds and cluttered foliage, since the human eye is naturally more sensitive to green light than to red. As an open-emitter design, it keeps the sight window unobstructed for a wide field of view, while automatic power management turns the dot on at the slightest movement and powers it down after a few minutes of stillness to save battery. It is a solid choice for a subcompact or compact carry pistol that needs a dependable red-dot-style sight without a flagship price tag.

Key Specifications

• 1x Power keeps both eyes open for fast, natural target acquisition at typical carry distances.
• 6 MOA Green Dot Reticle stands out clearly in bright light and against dark or cluttered backgrounds.
• Open-Emitter Reflex Design keeps the sight window unobstructed for a wide, natural field of view.
• RMSc Footprint fits directly onto pistol slides cut for the widely used RMSc mounting pattern.
• Motion-Activated Power turns the dot on at the slightest movement and shuts it off after roughly three minutes of stillness.
• Side-Loading CR1620 Battery allows battery changes without removing the sight from the slide.
• IPX6 Water Resistance stands up to rain and heavy moisture during daily carry.
• Low-Battery Warning Flash triples-flashes the reticle once per minute when the battery is running low.
• Parallax-Free Optic keeps the dot accurate on target regardless of where your eye is positioned behind the window.

Frequently Asked Questions

Will this sight fit my optics-ready slide? It uses the RMSc footprint, one of the most common mounting patterns on optics-ready compact and subcompact pistols.

Do I need to turn the sight on manually? No. It powers on automatically at the slightest movement and shuts off after a few minutes of inactivity to save the battery.

How will I know when the battery is low? The reticle triple-flashes once per minute once the battery voltage drops low, giving you a clear warning before it dies.

Buy the OSight K 6 MOA Green Dot Open Reflex Sight

Order this sight from our Lubbock, Texas gun shop and add a bright, easy-to-see green dot to your carry or range pistol without the flagship price. Its RMSc footprint and motion-activated power make it a simple drop-on upgrade for an optics-ready slide. Browse our full selection of red dot sights for other reticle colors and footprints.