Magpul MBUS Front Sight for AR-15/ M16, Stealth Gray Polymer, Spring-Loaded Flip Up

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Item # 611927799

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Shop all Magpul

New Arrival

Magpul MBUS Front Sight for AR-15/ M16, Stealth Gray Polymer, Spring-Loaded Flip Up

Item # 611927799

$37^.99

Spend $49.99 to unlock free delivery!

This item is available online only

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Free standard delivery on online footwear & Clothing purchases of $49 and over.

Neighbor’s Club Members earn points with purchases.

The MBUS (Magpul Back-Up Sight) is a low-cost, polymer, color injection molded folding back-up sight. The MBUS Front Sight is adjustable for elevation and fits most 1913 Picatinny-railed hand guards, but is specifically tailored to the AR15/M16 platform. Spring-loaded flip up sight easily activated from either side or by pressing the top release. Protective wings shield the spring-locking A2 front sight post. Provides the same height over bore as standard A2 sights. 1.6 MOA (1.886"/100m) per click with 14.5" sight radius. 1.2 MOA (1.367"/100m) per click with 20.0" sight radius. Cannot be mounted to a railed gas block due to excess heat issues. Front MBUS must be mounted to a railed fore end on the same plane as the receiver rail. Because of this the sight is also not compatible with MOE Hand Guards. Made in the USA.

MBUS (Magpul Back-Up Sight) is a low-cost, polymer, color injection molded folding back-up sight
MBUS Front Sight is adjustable for elevation
Fits most 1913 Picatinny-railed hand guards, tailored specifically to the AR15/M16 platform
Spring-loaded flip-up design; can be activated from either side or by pressing the top release
Protective wings shield the spring-locking A2 front sight post
Provides the same height over bore as standard A2 sights
Adjustment clicks: 1.6 MOA (1.886 in / 100 m) per click with 14.5 in sight radius
Adjustment clicks: 1.2 MOA (1.367 in / 100 m) per click with 20.0 in sight radius
Cannot be mounted to a railed gas block due to excess heat issues
Front MBUS must mount to a railed fore end on the same plane as the receiver rail
Not compatible with MOE Hand Guards (because of mounting plane requirements)
Made in the USA
Firearm Fitment: AR-15
Base Configuration: Picatinny Rail
Color: Stealth Gray
Elevation Adjustment: 1.60 MOA
Firearm Type: AR Platform
Frame Material: Polymer
Includes: Elevation Adjustment Tool
Mount Type: Picatinny Rail/STANAG 4694 Rail
Style: Folding Back Up Sight
Weight: 1.20 oz

Brand	Magpul
Country of Origin	Made in USA
Ammunition Capacity	N/A
Compatibility	AR-15, AR Platform
Gun Compatibility	Rifles
Caliber	N/A
Gun Part Type	Sights
Primary Color	Gray
Product Weight	1.20 oz.
Manufacturer Part Number	MAG247GRY

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32 reviews with 5 stars.

5 reviews with 4 stars.

2 reviews with 3 stars.

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Overall Rating

4.8

25 out of 28 (89%) reviewers recommend this product

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Summary of Reviews

AI-generated from customer ratings & reviews, and may include incentivized reviews.

Customers overwhelmingly praise these backup iron sights for exceptional build quality, reliability, and seamless installation. Reviewers consistently highlight the solid, durable construction with secure locking mechanisms that inspire confidence. The intuitive flip-up design and lightweight profil...

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This summary is AI-generated from ratings and reviews across multiple languages.

1 to 4 of 39 Reviews .

1 – 4 of 39 Reviews

Argus Arms

Placitas, NM

Review 1

4 out of 5 stars.

High Quality Product!

11 months ago

This will work and is good quality, but I'd recommend buying the MBUS 3. It is a big upgrade.

Yes, I recommend this product.

Originally posted on Magpul

1911rocks

Review 1

4 out of 5 stars.

Good value for the money

a year ago

It's a little too wide for my taste, I feel like I have a blind spot just below the sight pin. Good sight picture, and flips up and locks down like a champ. I have total faith in it's function. The sight tool, maybe not. The plastic nibs look fragile.

Originally posted on Magpul

Chucko75

Atlanta, GA

Review 1

5 out of 5 stars.

MBUS Front Sight w/offset light rail

a year ago

Another great product. Be aware of the position of your tactical light. I needed mine right next to my light. In order to tighten sight I had to remove my light. At the same time make sure your sight flip is also away from your offset mount in order to flip properly.

Originally posted on Magpul

Rob

Central, Ma.

Review 1

5 out of 5 stars.

Best sights ever

a year ago

Don’t bother looking else where. This is the only sight you need.

Yes, I recommend this product.

Originally posted on Magpul

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Reviews

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Summary of Reviews

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High Quality Product!

Good value for the money

MBUS Front Sight w/offset light rail

Best sights ever