Geissele Automatics BUIS Folding Rear Sight Ddc
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Geissele
Overview
The Geissele Automatics BUIS Folding Rear Sight is a robust and lightweight rear sight designed for quick deployment and reliable performance on your AR-15. Made from durable 6061-T6 aluminum, this folding sight allows for a streamlined profile when not in use, ensuring it doesn't interfere with optics or other attachments. This rear sight is commonly found in builds featuring a mid-length gas system and chambered in 5.56 NATO, making it an excellent choice for versatile setups.
Specifications
August 2026 on GunPartPicker
Geissele Automatics BUIS Folding Rear Sight Ddc ranked #18 of the 26 rear sights builders added on GunPartPicker in August 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #15 of the 57 rear sights builders have added. Builds with this rear sight are nearly all AR-15.
It was out of stock everywhere we track for all of August 2026, and today none of the 2 retailers we track has it in stock right now. Listed prices start at $100.99 at Brownells for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
Not sure which rear sight to pick?
We ranked every rear sight by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Rear Sight Guide →Frequently Built With
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Builds Featuring This Part
See all 1 →Builds in the community that include the Geissele Automatics Llc Buis Folding Rear Sight Ddc
| Build | Parts | Total |
|---|---|---|
 | 21 | $5249.14 |
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