Magpul MBUS PRO Rear Sight - Black
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Magpul
Overview
The Magpul MBUS Pro Rear Sight in black is a fixed folding rear sight designed for durability and reliability. Its forged construction offers a robust platform for aiming, while the folding feature allows for easy storage and deployment when needed. This rear sight is commonly found on builds featuring a mid-length gas system and chambered in 5.56 NATO, making it a practical choice for a variety of tactical and competitive applications.
Specifications
Available Merchants(6)
Prices checked
Price Alert
October 2026 on GunPartPicker
Magpul MBUS PRO Rear Sight - Black was the fifth most added rear sight on GunPartPicker in October 2026, behind the NCSTAR Vism PRO Series Flip-Up Rear Sight, with about 6% of all rear sights added to builds. Up from #6 in September. Builds with this rear sight are mostly chambered in 5.56 NATO (88%), mostly on mid-length gas (70%, then carbine-length 21%), and nearly all AR-15.
Availability is good: it was in stock at one retailer or another nearly every day in October 2026, and today 5 of the 6 retailers we track have it in stock. It dipped to $87.35 at GritR Sports for a stretch in October 2026, well under its usual $118.70, so sales do come around. Buying today, the lowest price is $109.95 at CMMG, above October's low of $87.35, so a better deal may come back.
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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BCM GFHMK2MED Ambidextrous MK2 Charging Handle Compatible w/ Mil-Spec AR-15 Black 7075 T-6 Aluminum
EOTECH 3x30.5mm X 21.6mm Holographic Hybrid Green Dot Sight - HHSGRN
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 Pro Rear Sight - Black
| Build | Parts | Total |
|---|---|---|
| future pistol build | 20 | $3557.91 |
 | 21 | $2537.32 |
 | 21 | $1826.08 |
 | 20 | $8708.60 |
 | 14 | $1175.09 |
 | 20 | $3530.71 |
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