Magpul MBUS Rear AR 15 Back-Up Sight Gen 2 – MAG248



The Magpul MBUS Rear AR-15 Back-Up Sight Gen 2 is a reliable and durable backup sighting solution designed specifically for the AR-15/M16 platform. Crafted from impact-resistant polymer, this rear sight is built to withstand the rigors of demanding tactical situations while remaining lightweight and easy to operate.

The rear sight features a spring-loaded flip-up design, allowing for fast engagement with just a small amount of pressure on the release tabs or by pressing the top. The polymer construction resists impacts and operational abuse, ensuring stability and accurate alignment. Compatible with most MIL-STD-1913 Picatinny/STANAG 4694 receiver rails, this sight provides the same height-over-bore as standard A2 iron sights.


  • Dual Apertures: Large and Small
  • Windage Adjustment: ~0.7 MOA/click (14.5" sight radius), ~0.5 MOA/click (20" sight radius)
  • Height (Stowed): ~0.51"
  • Center Aperture Height: 1.42"
  • Length (Stowed): 2.6"
  • Length (Deployed): 1.5"
  • Weight (with hardware): 1.3 oz