Magpul
Overview
The Magpul MBUS Gen 3 Folding Rear Sight is a rear sight. Compare prices from multiple merchants and find the best deal.
Specifications
August 2026 on GunPartPicker
Magpul MBUS Gen 3 Folding Rear Sight was the ninth most added rear sight on GunPartPicker in August 2026. Builders have been adding it to their builds on GunPartPicker since March 2026. All time, it is the tenth most added rear sight on the site.
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today both retailers we track have it in stock. Prices barely moved in August 2026, holding around $56.95, so there haven't been real sales lately. Buying today, the lowest price is $56.95 at AR15 Discounts, which matches the best price we saw in August.
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
The part most often added in each category by the 13 builds that include this one
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