Magpul® MBUS® Front Sight Picatinny Black


SKU: MAG247BLK Categories: ,

The MBUS (Magpul® Back-Up Sight) is a low-cost, color injection-molded, folding back-up sight. The MBUS Front Sight is adjustable for elevation and fits most 1913 Picatinny-railed hand guards, but is specifically tailored to the AR15 / M16 platform.

An elevation adjustment tool is included, but most aftermarket A2 front sight adjustment tools may be used as well.

Made in the USA.


  • Spring-Loaded Flip Up Sight
    • Easily activated from either side or by pressing the top
    • Protective wings shield the spring-locking A2 front sight post
  • Impact-Resistant Polymer Construction
    • Polymer construction provides light weight and resists operational abuse
  • Detent and Spring Pressure Keeps Sight Erect
    • Detent and spring pressure keeps sight erect but allows for unobstructed folding under impact, etc.
  • Clamps to Most MIL-STD-1913 Picatinny Rails
    • Compatible with most MIL-STD-1913 Picatinny / STANAG 4694-railed hand guards* and provides the same height-over-bore as standard A2 irons


Mounting Interface MIL-STD-1913 Picatinny/STANAG 4694 Type Flip-Up Spring-Loaded Elevation Adjustable
Interface Slots Used (Deployed) 4 Interface Slots Used (Stowed) 7
Material Impact Resistant Polymer Material Finish Matte Black
Initial Post Height Over Rail (in; cm) ~1.4; 3.6 Elevation Adjustment per Click w/ 14.5″ Sight Radius (MOA) 1.6
Elevation Adjustment per Click w/ 20″ Sight Radius (MOA) 1.2 Windage Adjustment per Click w/ 14.5″ Sight Radius (MOA) N/A
Windage Adjustment per Click w/ 20″ Sight Radius (MOA) N/A Deployed Length (in; cm) 1.5; 3.81
Stowed Length (in; cm) 2.6; 6.604 Width (in; cm) ~1.4; 3.5
Stowed Height Above Rail (in; cm) ~0.51; 1.2954 Weight w/ Hardware (oz; g) 1.2; 34.0194

Additional Information:

*Note: Cannot be mounted to a railed gas block due to excess heat issues. Front MBUS must be mounted to a railed fore end on the same plane as the receiver rail. Because of this the sight is also not compatible with MOE Hand Guards.

Item Number MAG247-BLK


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