Holosun 507K Open Reflex Green Dot Sight 2 MOA, Black - HE507K-GR X2
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Holosun
Overview
The Holosun 507K Open Reflex Green Dot Sight is designed for quick target acquisition with its 2 MOA dot, ensuring precision for various shooting applications. Constructed from durable 7075-T6 aluminum, this reflex sight offers a lightweight yet robust option for your build. Commonly found in compact and lightweight AR-15 configurations, the 507K is an excellent choice for builders focusing on versatility and performance in close to mid-range engagements.
Specifications
Build history on GunPartPicker
Builders on GunPartPicker first added the Holosun 507K Open Reflex Green Dot Sight 2 MOA, Black - HE507K-GR X2 to a build in April 2026.
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today 11 of the 12 retailers we track have it in stock. It dipped to $287.99 at Sportsmans Outdoor Superstore for a stretch in August 2026, well under its usual $319.99, so sales do come around. Buying today, the lowest price is $319.99 at Brownells, above August's low of $287.99, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
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