Magpul MBUS Pro Rear Backup Sight – Black Steel (MAG276-BLK)

The Magpul MBUS Pro Rear Backup Sight (MAG276-BLK) is a mission-ready, all-steel backup iron sight engineered for serious AR-platform shooters who demand reliability without compromise. Built entirely from case-hardened steel and finished with Melonite QPQ treatment, this rear sight delivers exceptional resistance to wear, corrosion, and the harshest field conditions — all in a remarkably low-profile, lightweight package.

Designed to mount on any MIL-STD-1913 Picatinny or STANAG 4694 rail, the MBUS Pro Rear features a dual-aperture design with tool-free windage adjustment via a low-profile knob. Positive detents lock the sight securely in both the deployed and stowed positions, so it stays exactly where you need it — up and at standard AR sight height when you need it, folded flat and out of the way when you don’t.

Whether you’re running it as a standalone sighting solution or pairing it with the MBUS Pro Front for a complete BUIS setup, the MBUS Pro Rear is compatible with a wide range of rail-height gas blocks and accessories. Proudly made in the U.S.A., this is the backup sight trusted by professionals and competitive shooters alike.

**Key Features:**
– All-steel construction for maximum durability and strength
– Case-hardened and Melonite QPQ-finished for extreme wear and corrosion resistance
– Mounts on any MIL-STD-1913 Picatinny / STANAG 4694 rail
– Tool-free windage adjustment with low-profile knob
– Dual-aperture rear for versatile target acquisition
– Positive detents in both up and down positions
– Deploys to standard AR sight height
– Made in the U.S.A.

Order online today and take advantage of VanTon Arms’ competitive pricing and fast nationwide shipping. Don’t settle for polymer when Magpul Pro-grade steel is within reach.