Item #:
873750004365
UPC: #:
873750004365
availability:
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Magpul MBUS Rear Sight MAG248 FDE Folding Backup Iron Sights

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The Magpul MBUS Rear Sight MAG248 in Flat Dark Earth delivers reliable backup sighting when optics fail. This spring-loaded folding sight automatically deploys under pressure and locks securely in the upright position for immediate target acquisition.

What Makes This Different

Unlike fixed iron sights that create snag points, the MBUS features a low-profile folding design that sits flush when not in use. The sight housing is injection-molded from impact-resistant polymer that withstands repeated deployment cycles without cracking. Dual aperture options provide both close-range and precision shooting capabilities in a single compact unit.

Key Features

  • Spring-loaded flip-up mechanism deploys with finger pressure or weapon charging
  • Dual aperture design: large 0.070" opening for CQB, small 0.040" for precision
  • Fits standard MIL-STD-1913 Picatinny rails without modification
  • Impact-resistant polymer construction weighs only 1.2 ounces
  • Flat Dark Earth finish matches FDE weapon systems and accessories
  • Windage adjustable with included tool for zero retention
  • Compatible with AR-15, M16, and other 5.56/.223 platforms
Field performance remains consistent across temperature extremes and adverse conditions. The sight maintains zero through thousands of deployment cycles, making it suitable for law enforcement, military applications, and competitive shooting. Rain, dust, and debris clear easily from the streamlined profile without affecting sight picture clarity.

Technical Specs

  • Overall length: 1.15 inches when folded
  • Height: 1.38 inches when deployed
  • Weight: 1.2 ounces
  • Material: Reinforced polymer construction
  • Mounting: MIL-STD-1913 Picatinny rail compatible
  • Aperture sizes: 0.070" and 0.040" diameter
  • Color: Flat Dark Earth (FDE)
  • Country of origin: United States
The MBUS rear sight provides essential backup capability without adding bulk to modern rifle configurations. Professional users rely on this proven design when mission success depends on having functional iron sights ready at a moment's notice.