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Magpul MBUS 3 – Gen 3 Flip-Up Sights for AR-15 | MSP
Magpul MBUS 3 – Gen 3 Flip-Up Polymer Sights for AR-15
Rugged, Lightweight & Ready: The MBUS 3 is Here
The Magpul MBUS 3 brings the best of both worlds — the proven reliability of the original MBUS Gen 2 and the refined design of the MBUS Pro, all at a price that makes sense for any AR builder. These Gen 3 polymer sights offer low-profile styling, spring-loaded deployment, and tool-free adjustments, all in a compact, rugged package.
Whether you’re outfitting a duty rifle, a lightweight range gun, or a budget-friendly build, the MBUS 3 is the go-to backup iron sight system for modern shooters.
Why Choose Magpul MBUS 3 Sights?
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✅ Next-Gen Design – Slimmer and lighter than Gen 2
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✅ Spring-Loaded Deployment – Fast, one-hand operation
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✅ Polymer Construction – Lightweight and impact-resistant
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✅ Standard AR Height – Compatible with co-witness optics setups
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✅ Tool-Free Adjustments – Windage (rear), elevation (front)
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✅ Fits Any Picatinny Rail – Mounts easily on AR-15, AR-10 & similar rifles
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✅ Made in the USA – Magpul durability backed by American craftsmanship
MBUS 3 vs MBUS Gen 2 vs MBUS Pro
| Feature | MBUS 3 (Gen 3) | MBUS Gen 2 | MBUS Pro (Steel) |
|---|---|---|---|
| Material | Reinforced Polymer | Polymer | Steel |
| Profile | Lower & Slimmer | Slightly bulkier | Ultra-low |
| Weight | Lightest | Light | Heaviest |
| Adjustment | Tool-Free | Tool-Free | Tool-Free |
| Co-Witness Ready | ✅ | ✅ | ✅ |
💡 MBUS 3 is ideal for lightweight builds that need tough, reliable, and low-profile sights without the steel price tag.
🔩 Available MBUS 3 Models
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MBUS 3 Front Sight
Tool-less elevation adjustment. Compact and foldable. -
MBUS 3 Rear Sight
Dual-aperture, windage adjustable. Fits any Picatinny rear rail. -
MBUS 3 Front & Rear Set
Buy as a combo and save. Great for new builds or replacement.
🧠 MBUS 3 FAQs
Q: What’s new with the Magpul MBUS 3?
A: MBUS 3 improves on Gen 2 with a slimmer profile, enhanced construction, and faster deployment while staying lightweight and affordable.
Q: Are MBUS 3 sights compatible with red dots?
A: Yes! They’re standard AR-height for co-witness with most optics (absolute or lower 1/3).
Q: Can I install these on my AR-10?
A: Absolutely. As long as your rifle has Picatinny rails, MBUS 3 sights will mount and zero just like on an AR-15.
Q: Are these durable enough for duty or defense?
A: Yes. While not as tank-tough as MBUS Pro (steel), MBUS 3 is rugged enough for range, training, and defensive use.
Q: Do they require tools to zero?
A: No tools needed. Windage and elevation can be adjusted by hand.
Featured MBUS 3 Sights
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Magpul MBUS 3 Front Sight – Black / FDE
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Magpul MBUS 3 Rear Sight – Black / FDE
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Magpul MBUS 3 Sight Set – Combo Pack
🚀 Lightweight. Reliable. Proven. MBUS 3 Is Ready for Your Build.
Whether you’re upgrading a rifle or building from scratch, the Magpul MBUS 3 offers everything you want in a set of backup sights — without the weight or price of steel. Slim profile, tool-free adjustments, and Magpul reliability mean you’re ready for the range, the field, or anything in between.
🛒 Order your MBUS 3 sights today — in stock and shipping fast from Mounts Plus.