Magpul AR-15 Flip-Up MBUS PRO Magpul Back-Up Rear Sight Black
Click to see full view
Magpul
Overview
The Magpul AR-15 Flip-Up MBUS Pro Rear Sight in black offers a reliable backup sighting solution for your rifle. Designed with a flip-up style, it allows for quick deployment and retraction, ensuring that you're ready for any situation without adding unnecessary bulk to your setup. This rear sight is frequently found in builds featuring a mid-length gas system and chambered in 5.56 NATO, making it a popular choice for those looking to enhance their accuracy and versatility.
Specifications
Available Merchants(9)
Prices checked
Price Alert
September 2026 on GunPartPicker
Magpul AR-15 Flip-Up MBUS PRO Magpul Back-Up Rear Sight Black was the most added rear sight on GunPartPicker in September 2026, ahead of the Magpul AR-15 Flip-Up MBUS Gen 2 Tactical Rear Sight Black, with about 27% of all rear sights added to builds. Up from #7 in August. Builds with this rear sight are mostly chambered in 5.56 NATO (93%), mostly on mid-length gas (90%), 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 7 of the 9 retailers we track have it in stock. It dipped to $79.99 at KY Gun Company for a stretch in September 2026, well under its usual $99.99, so sales do come around. Buying today, the lowest price is $79.99 at KY Gun Company, 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
The part most often added in each category by the builds that include this one
Magpul .432" Flip-Up MBUS PRO Back-Up Front Sight Steel Black
BCM GFHMK2MED Ambidextrous MK2 Charging Handle Compatible w/ Mil-Spec AR-15 Black 7075 T-6 Aluminum
Bravo Company M16 Bolt Carrier Group Black
Geissele Automatics G2S Two Stage AR-15 Trigger .154"
Centurion Arms CM4 5.56 Forged AR-15 Receiver Set
Magpul M-LOK MVG - MOE Vertical Grip - Black - MAG597-Black
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 1 →Builds in the community that include the Magpul Ar-15 Flip-Up Mbus Pro Magpul Back-Up Rear Sight Black
| Build | Parts | Total |
|---|---|---|
 | 27 | $6471.37 |
No reviews yet. Be the first to review this product!