Magpul MBUS Front Sight Flip-Up Back-Up Sight

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.

• 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
• Clamps to most any MIL-STD-1913 Picatinny / STANAG 4694 railed hand guard and provides same height-over-bore as standard A2 irons
• Protective wings shield spring-locking A2 front sight post
• Elevation adjustment tool included, but most aftermarket A2 front sight adjustment tools may be used
• Color: Black
• Elevation adjustment: ~1.6 MOA (1.886"/100m) per click with 14.5" sight radius
• Elevation adjustment: ~1.2 MOA (1.367"/100m) per click with 20" sight radius
• Height above rail (stowed): Approx. 0.51"
• Length: 2.6" (stowed), 1.5" (deployed)
• Weight: 1.2 oz.
• Made in USA