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Magpul MAG248 MBUS Sight, Rear

In stock
From CA$96.77

The MBUS (Magpul® Back-Up Sight) is a low-cost, color injection molded, folding back-up sight. The dual aperture MBUS Rear Sight is adjustable for windage and fits most Picatinny rail equipped weapons, but is specifically tailored to the AR-15/M16 platform.


  • Impact resistant polymer construction provides light weight and resists operational abuse
  • Spring-loaded flip up sight easily activated from either side or by pressing the top
  • Detent and spring pressure keeps sight erect but allows for unobstructed folding under impact, etc.
  • Clamps to Picatinny/STANAG 4694 receiver rail and provides the same height-over-bore as standard A2 irons
  • Protective wings shield the dual, same plane flip apertures
  • Sight can still be folded with either large or small aperture in position
  • Detent knob easily and positively adjusts windage
  • Made in U.S.A.


  • Weight, w/ hardware: 1.3 oz.
  • Height above rail, stowed: ~0.51 in.
  • Center of aperture to top of rail: 1.42 in.
  • Length, stowed: 2.6 in.
  • Length, deployed: 1.5 in.

Windage Adjustment

  • ~0.7 MOA (0.754"/100m) per click with a 14.5" sight radius
  • ~0.5 MOA (0.547"/100m) per click with a 20" sight radius

You get:

  • (1) MBUS® SIGHT – REAR

Compatible with:

  • Picatinny rails
  • Provides the same height-over-bore as standard A2 iron sights

Installation Difficulty: 

Tools required: Slot or hex screwdriver

Installation notes: none

Model numbers:

  • MAG248-BLK - Black
  • MAG248-FDE - Flat Dark Earth
  • MAG248-FOL - Foliage Green
  • MAG248-GRY - Stealth Gray of Gray
  • MAG248-ODG - Olive Drab Green