Magpul .432" Flip-Up MBUS PRO Back-Up Front Sight Steel Black
Click to see full view
Magpul
Overview
The Magpul .432" Flip-Up MBUS Pro Back-Up Front Sight is designed to provide a durable and reliable sighting option that can be easily deployed when needed. Constructed from steel, this front sight features a low-profile design that minimizes snagging and is specifically engineered for quick, tool-free adjustments. With a height of 0.432 inches, it integrates seamlessly with various optics setups, making it a solid choice for builds featuring a mid-length gas system in 5.56 NATO caliber.
Specifications
Available Merchants(6)
Prices checked
Price Alert
October 2026 on GunPartPicker
Magpul .432" Flip-Up MBUS PRO Back-Up Front Sight Steel Black was the second most added front sight on GunPartPicker in October 2026, behind the Magpul 1.5" Flip-Up MBUS Gen 2 Front Sight Polymer Black, with about 20% of all front sights added to builds. Down from #1 in September. Builds with this front sight are mostly chambered in 5.56 NATO (90%), mostly on mid-length gas (87%, then carbine-length 8%), and mostly AR-15 (94%).
Availability is good: it was in stock at one retailer or another nearly every day in October 2026, and today 4 of the 6 retailers we track have it in stock. The best price drifted down from $104.95 to $78.62 over October 2026 without a real sale. Buying today, the lowest price is $66.99 at KY Gun Company, which matches the best price we saw in October.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
Not sure which front sight to pick?
We ranked every front sight by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Front Sight Guide →Frequently Built With
The part most often added in each category by hundreds of builds that include this one
LMT MARS-L Ambidextrous AR-15 Stripped Lower Receiver
Magpul AR-15 Flip-Up MBUS PRO Magpul Back-Up Rear Sight Black
Geissele Automatics G2S Two Stage AR-15 Trigger .154"
Magpul AR-15 MOE Stock Collapsible Mil-Spec Black
Bravo Company M16 Bolt Carrier Group Black
CompM5 2 MOA Red Dot Reflex Sight W/Spacer & LRP Mount 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 builds →Builds in the community that include the Magpul .432" Flip-Up Mbus Pro Back-Up Front Sight Steel Black
| Build | Parts | Total |
|---|---|---|
 | 27 | $6557.49 |
 | 21 | $2537.32 |
 | 11 | $5430.89 |
 | 37 | $18677.82 |
 | 28 | $3254.64 |
 | 20 | $3530.71 |
No reviews yet. Be the first to review this product!