The Magpul MBUS 3 Front Sight in Flat Dark Earth is a flip-up backup front sight for Picatinny rails. Elevation adjusts without tools, a change from earlier MBUS front sights that needed an A2 front sight tool. The front post is a dual-width design similar to the MBUS Pro.
The MBUS 3 is Magpul’s third-generation polymer backup sight, much slimmer than the earlier MBUS at just 0.44 inch tall folded and 1.15 inches at its widest. It’s made of Magpul’s impact-resistant polymer, so it stays light and durable. Spring-loaded deployment pops it up with an ambidextrous push button on top. This version is finished in FDE, which is the main visual difference to check when comparing related models in the same family.
It sits at standard AR height when deployed, so it co-witnesses with most optics. Pair it with the MBUS 3 rear sight for a matched set. Color variants can share nearly identical specifications, so the finish is worth checking along with the SKU. Browse more optics and rangefinders.
- Tool-less elevation adjustment
- Dual-width front post
- 0.44 inch folded height
- Ambidextrous push-button deployment
