Magpul MBUS 3 Front Flip Up Sight AR-15 Picatinny

The MBUS 3 front sight mixes the MBUS and MBUS Pro into a smaller, lighter polymer backup sight. It clamps to MIL-STD-1913 Picatinny rails and deploys from a spring loaded fold with an ambidextrous push button. Deployed, it sits at standard AR height.

The dual width front post adjusts for elevation without tools: 1 MOA per click at a 14.5" sight radius, 0.7 MOA at 20". Mount it on a railed forend on the same plane as the receiver rail. It cannot go on a railed gas block because of heat, and it is not compatible with MOE hand guards.