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Vortex Optics
Overview
The Vortex Defender-ST 3 MOA Green Dot Sight is a red dot optic designed for rapid target acquisition, featuring a 3 MOA dot size that strikes a balance between precision and versatility. The green reticle color offers enhanced visibility in various lighting conditions, making it a practical choice for diverse shooting environments. This sight is commonly found in tactical and competitive builds, where quick aiming is essential.
Builders have been adding the Vortex Defender-ST 3 MOA Green Dot Sight to their builds on GunPartPicker since June 2026. All time, it ranks #138 of the 462 optics builders have added.
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today all 10 retailers we track have it in stock. Prices barely moved in August 2026, holding around $299.99, so there haven't been real sales lately. Buying today, the lowest price is $299.99 at Brownells, which matches the best price we saw in August.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
We ranked every optic by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Red Dot & Optic Guide →Check it against the live catalog:
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