P
PatchMe556solid but a few notes
Reviewed on April 27, 2026Verified with Build
works great. zero shifted a touch after the first range session
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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
MPNMAG276
PositionRear
ColorBlack
IlluminatedNon-Illuminated
Fixed FoldingFolding
StyleForged
August 2026 on GunPartPicker
Magpul MBUS PRO Rear Sight - Black was the most added rear sight on GunPartPicker in August 2026, ahead of the Magpul AR-15 Flip-Up MBUS Gen 2 Tactical Rear Sight Black, with about 20% of all rear sights added to builds. Up from #3 in July. Builds with this rear sight are nearly all chambered in 5.56 NATO, mostly on mid-length gas (60%, then carbine-length 40%), and nearly all AR-15.
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today 4 of the 6 retailers we track have it in stock. The best price crept up from $89 to $118.70 over August 2026. Buying today, the lowest price is $89 at GritR Sports, 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 97 builds that include this one
Magpul .432" Flip-Up MBUS PRO Back-Up Front Sight Steel Black
Front Sight$67in 47 builds
LMT MARS-L Ambidextrous AR-15 Stripped Lower Receiver
Lower Receiver$342in 9 builds
Magpul AR-15 MOE Stock Collapsible Mil-Spec Black
Stock & Brace$34in 14 builds
Geissele Automatics Super Semi-Automatic Enhanced SSA-E Two Stage AR-15 Trigger .154"
Trigger$201in 17 builds
BCM GFHMK2MED Ambidextrous MK2 Charging Handle Compatible w/ Mil-Spec AR-15 Black 7075 T-6 Aluminum
Charging Handle$75in 12 builds
Sons of Liberty Gun Works Stripped Upper Receiver
Upper Receiver$143 · out of stockin 7 builds
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
60%
Mid-Length60%
Carbine40%
Builds Featuring This Part
See all 5 →Builds in the community that include the Magpul Mbus Pro Rear Sight - Black
| Build | Parts | Total |
|---|---|---|
 | 21 | $2583.57 |
 | 21 | $1739.25 |
 | 20 | $8541.21 |
 | 14 | $1111.89 |
 | 20 | $3453.89 |
Customer reviews
4.0out of 5
1 global rating
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