Magpul's MBUS 3 sights are the next evolution in the Magpul Back-Up Sight lineup. The MBUS 3 combines the strength and value of the original MBUS with the aesthetics and profile of the MBUS Pro. Significantly reduced in size from the MBUS, this front sight sits at just 0.47" high when folded, 1.38" at its widest point, and weighs a scant 25 grams with hardware. Its aesthetics are derived from the MBUS Pro, but the MBUS 3 Front Sight is constructed of impact-resistant polymer, making it lightweight and extremely durable.Specifications and Features: Magpul Industries Item Number: MAG1166-FDE MBUS 3 Front Sight Standard AR Height When Deployed Slim and Low Profile Attaches to MIL-STD-1913 Picatinny Rails Impact-Resistant Polymer Construction Spring-Loaded Flip Up Design Height (when folded): 0.47" 1.38" Wide at Widest Point Weight: .88 oz Made in the USA Flat Dark Earth Finish