The Magpul MAG527-BLK MAG527 has been upgraded to the Mbus Pro LR. It retains the signature slim profile and design of the original MBUS Pro, enhanced with a new elevation adjustment wheel. This feature allows for precise engagement with targets over fluctuating distances. Constructed entirely from steel, it offers a robust sight solution without the need for tools in the adjustment process. Beneficial positive detents ensure that the MBUS Pro LR retains the standard AR sight height when deployed. When stowed, the sight is virtually invisible thanks to its extremely low-profile design.