Magpul PTS MBUS2 Flip-Up Rear Sight

The MBUS 2 (Magpul Back-Up Sight) is a light-weight, color injection molded, folding back-up sight. The dual aperture MBUS 2 Rear Sight is adjustable for windage and fits all mil-spec 1913 Picatinny rail equipped weapons, but is specifically tailored to the AR15/M16/M4 platform. The biggest difference between the MBUS 1 and MBUS 2 sights are the lower profile of the MBUS 2 sights.

Features:

• 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 any standard mil-spec 1913 Picatinny railed hand guard and provides the same height-over-bore as standard A2 irons
• Protective wings shield the standard A2 front sight post
• Detent knob easily and positively adjusts windage