MBUS 3 Back-Up Front Sight

The Magpul MBUS 3 is the third generation of one of the most popular back-up iron sight designs on the market, completely redesigned with significant improvements over the MBUS Pro. The front sight folds to a remarkably low 0.47 inches tall, maintaining a minimal profile on your rail when stowed, and deploys instantly via an ambidextrous push-button mechanism. It includes two interchangeable sight post widths: a 0.06-inch standard width for maximum visibility in fast shooting, and a 0.04-inch match width for increased precision at distance. Tool-less elevation adjustment allows quick zeroing without carrying extra gear.