Night Fision is proud to offer their premium Perfect Dot night sight as a front sight post designed to work with the popular Magpul MBUS Pro flip up iron sights for AR-15 firearms. This front sight installs in place of the OEM front sight, and is comparable to the Match version of the MBUS Pro Flip Up Front Sight and is 0.040 inches in width. MBUS Pro front sight body not included, shown in photo for complete front sight picture only.