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Magpul Rear Sight – MBUS Gen 2, Pro & Offset BUIS | MSP


Magpul Rear Sight – MBUS Gen 2, Pro & Offset BUIS | MSP

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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?

  • Tool-Free Windage Adjustment – Fast zeroing in the field

  • Flip-Up Spring-Loaded Design – Stays low until you need it

  • AR-Height Co-Witness – Compatible with most optics

  • Polymer or Steel Options – Match your build type or mission

  • Trusted Durability – Built for range, duty, or tactical use

  • Picatinny-Compatible – Mounts on any flat-top AR platform

  • 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

  • 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.