Magpul MBUS 3 Rear Sight - Stealth Gray
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Magpul
Overview
The Magpul MBUS 3 Rear Sight in Stealth Gray is a folding, fixed rear sight designed for robust performance and ease of use. Constructed from durable polymer, it provides a lightweight yet resilient option that won't weigh down your build. This non-illuminated rear sight is ideal for precision aiming in various lighting conditions and is commonly found in builds featuring a mid-length gas system chambered in 5.56 NATO.
Specifications
September 2026 on GunPartPicker
Magpul MBUS 3 Rear Sight - Stealth Gray was the seventh most added rear sight on GunPartPicker in September 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it is the eighth most added rear sight on the site. Builds with this rear sight are mostly chambered in 5.56 NATO (72%, then 300 Blackout 14%), mostly on mid-length gas (64%, then carbine-length 14%), and nearly all AR-15.
Availability is good: it was in stock at one retailer or another nearly every day in September 2026, and today only Magpul has it in stock. Prices barely moved in September 2026, holding around $59.95, so there haven't been real sales lately. Buying today, the lowest price is $59.95 at Magpul, 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?
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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.
Builds Featuring This Part
See all builds →Builds in the community that include the Magpul Mbus 3 Rear Sight - Stealth Gray
| Build | Parts | Total |
|---|---|---|
| Blacked out, upgraded | 19 | $2299.12 |
 | 22 | $2381.69 |
 | 31 | $2784.92 |
 | 17 | $1722.93 |
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