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Magpul Rear Sight – MBUS Gen 2, Pro & Offset BUIS | MSP
Magpul Rear Sight – Flip-Up BUIS for AR-15, AR-10 & Tactical Platforms
Trusted Backup Sights for Tactical Precision
The Magpul Rear Sight is more than just a backup — it’s a battle-ready aiming solution designed for rapid deployment, consistent accuracy, and rugged reliability. Whether you're building out a lightweight AR, outfitting a defensive carbine, or looking for professional-grade duty gear, Magpul offers the perfect rear sight to match your needs.
At Mounts Plus, we stock the full Magpul lineup — from the affordable MBUS Gen 2, to the low-profile MBUS Pro, and the Offset and LR (Long Range) rear sight options for advanced shooters.
Why Choose a Magpul Rear Sight?
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✅ Tool-Free Windage Adjustment – Fast zeroing in the field
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✅ Flip-Up Spring-Loaded Design – Stays low until you need it
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✅ AR-Height Co-Witness – Compatible with most optics
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✅ Polymer or Steel Options – Match your build type or mission
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✅ Trusted Durability – Built for range, duty, or tactical use
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✅ Picatinny-Compatible – Mounts on any flat-top AR platform
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✅ Made in the USA – Proven Magpul engineering
Compare Magpul Rear Sight Models
| Model | Material | Adjustment | Best Use Case |
|---|---|---|---|
| MBUS Gen 2 Rear | Polymer | Windage (tool-free) | Budget builds, training rifles |
| MBUS Gen 3 Rear | Polymer | Windage | Lightweight & modern AR builds |
| MBUS Pro Rear | Steel | Windage (tool-free) | Duty / rugged builds |
| MBUS Pro Offset Rear | Steel | Windage | Side-mounted backup to magnified optics |
| MBUS Pro LR Rear | Steel | Windage + Elevation | Precision ARs, long-range setups |
💡 All Magpul rear sights mount directly to 1913 Picatinny rails and are optimized for standard AR-height co-witness.
Featured Magpul Rear Sight Options
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MBUS Gen 2 Rear Sight – Black / FDE
Lightweight, affordable, spring-loaded deployment -
MBUS Pro Rear Sight – All-Steel
Slim, ultra-durable with dual aperture -
MBUS Pro LR Rear Sight
Elevation-adjustable for precision shooting -
MBUS Pro Offset Rear Sight
Designed for 45° mounting alongside optics -
MBUS Sight Sets – Front + Rear Combos
Bundle and save — perfect for new builds
Magpul Rear Sight FAQs
Q: Are Magpul rear sights compatible with my AR-15?
A: Yes. All Magpul rear sights mount to 1913 Picatinny rails, making them compatible with AR-15, AR-10, and most tactical rifles.
Q: Can I co-witness these with red dot optics?
A: Absolutely. All models are standard AR-height, perfect for absolute or lower 1/3 co-witness setups.
Q: What’s the main difference between Gen 2 and Pro rear sights?
A: Gen 2 is made of polymer (lightweight, budget-friendly), while Pro models are steel, slimmer, and better for hard use.
Q: Is windage adjustable without tools?
A: Yes. All Magpul rear sights offer tool-free windage adjustment, and the LR model adds elevation control as well.
Q: Do I need to buy the front and rear sights together?
A: Not at all. You can buy the rear sight alone or pair it with a Magpul front sight for a complete BUIS setup.
Elevate Your Rifle With Trusted Backup Sights
If your optic goes down, your backup iron sights should be ready — no compromises. The Magpul Rear Sight gives you reliable, repeatable performance in a slim, rugged form. From range-ready carbines to duty-ready rifles, these sights have earned their spot in the kits of serious shooters everywhere.
🛒 Shop now – Mounts Plus offers in-stock availability, fast shipping, and trusted support on all Magpul Rear Sights.