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Magpul
Overview
The Magpul MBUS Rear Sight is a folding rear sight designed to provide a reliable aiming solution for your AR-15 build. Its folding mechanism allows it to be stowed away when not in use, ensuring a sleek profile while maintaining durability and functionality when deployed. This rear sight is commonly found in tactical builds where space and versatility are key considerations.
Specifications
September 2026 on GunPartPicker
MAGPUL MBUS Rear Sight (MAG248-BLK) ranked #14 of the 23 rear sights builders added on GunPartPicker in September 2026. Builders have been adding it to their builds on GunPartPicker since March 2026. All time, it ranks #16 of the 64 rear sights builders have added.
Availability is good: it was in stock at one retailer or another nearly every day in September 2026, and today both retailers we track have it in stock. Prices barely moved in September 2026, holding around $46.99, so there haven't been real sales lately. Buying today, the lowest price is $46.99 at GritR Sports, which matches the best price we saw in September.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 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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Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
PlatformBased on real build data showing which platform (AR-15, AR-10, AR-9) builders pair with this product.
CaliberBased on real build data showing which calibers builders choose alongside this product.
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
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