Magpul MBUS Pro Offset Flip-Up Front Sight - AR-15 Steel Black

The Magpul MBUS Pro Offset Flip-Up Front Sight is a steel backup iron sight engineered for AR-15 shooters who run magnified optics as their primary aiming system. Built on Magpul's proven MBUS Pro platform, this offset front sight mounts to any MIL-STD-1913 Picatinny rail and deploys at a 45-degree angle, giving you a fully-featured iron sighting solution without blocking your primary scope or red dot. Whether your optic fails, gets damaged, or you need to engage a close target, this backup sight keeps you in the fight.

The offset design is smart: by rotating your rifle 45 degrees, you access a complete aiming system that doesn't interfere with most modern rifle setups. Unlike cowitnessed sights that clutter your sight picture under magnification, the offset flip-up lets your primary optic run unobstructed until you need it. The MBUS Pro Offset Front Sight is built entirely from Melonited steel, a hardened finish that resists wear and corrosion in field conditions. Deployment locks in with positive detent, so the sight stays exactly where you set it.

Zeroing is straightforward: tool-less adjustment of the front post means no gunsmithing or special tools needed to dial in your zero. The low-profile footprint keeps the sight compact when folded, reducing snag points and interference with accessories. Made in the U.S.A., this is the kind of backup iron sight that works the way it should—built tough, stays put, and earns its place on your rifle.

Key Features

• 45-degree offset right-hand deployment for unobstructed primary optic use
• All-steel Melonited construction resists corrosion and impacts
• Positive detent lock keeps sight secure when deployed
• Tool-less front post adjustment for fast field zeroing
• Low-profile design minimizes interference with optics and accessories
• Mounts on any MIL-STD-1913 Picatinny rail
• U.S.A. made

Specifications

Frequently Asked Questions

What is an offset flip-up sight and when would I use it?

An offset flip-up sight mounts to your rail at a 45-degree angle and deploys when needed. It's designed to serve as a backup aiming system if your primary optic is damaged or fails, or to engage targets at close range without removing your magnified scope. By rotating the rifle 45 degrees, you access the sight without it interfering with your primary optic's field of view.

Will this sight work with my AR-15?

Yes, the MBUS Pro Offset Front Sight mounts on any MIL-STD-1913 Picatinny rail, which is the standard on modern AR-15s. It's designed for AR-platform rifles and will fit standard rail systems.

Do I need tools to adjust the front post for zeroing?

No. The front post features tool-less adjustment, so you can dial in your zero in the field without any special equipment or gunsmithing.

What is Melonited steel and why does it matter?

Melonited steel is a hardened, corrosion-resistant surface finish that stands up to wear, impacts, and harsh field conditions. It's more durable than standard blued steel and resists rust in wet or salty environments.