This is a Magpul MBUS Pro Flip-Up Rear Sight for use with Standard Picatinny Rails

Built from corrosion-resistant steel with adjustable windage and dual viewing apertures, Magpul's Pro Rear flip-up sights are the perfect upgrade for any serious shooter's rifle.

Magpul’s MBUS Pro Sights are the ultimate backup for any serious rifle setup—featuring rugged all-steel construction with a case-hardened and melonited finish, standard AR height and easy-to-adjust windage and elevation. With MBUS Pro Sights, you’re getting a backup sighting system that’s more durable and more reliable than most primary sighting systems.

This Rear sight folds down for low-profile storage and pops up to standard AR height for easy and effective co-witness with optic sights. Windage adjustments don’t require tools, and multiple apertures offer improved flexibility for engaging targets.

Positive detents keep the MBUS PRO Front and Rear at standard AR sight height when deployed, and so low when they are stowed that you'll never notice them until they're needed. Narrow width Front is compatible with most IR aiming laser and light installations for the professional user.

Upgrade your rifle with MBUS Pro Sights today! 

Specifications

• MBUS Pro – Rear
  
  • Weight, w/ hardware: 1.80 oz.
  • Height above rail, stowed, at mid-point: ~0.37"
  • Length, stowed: 2.1"
  • Aperture height over rail: 1.41"
  • Small aperture dia.: 0.07"
  • Large aperture dia.: 0.19"