Night Fision is proud to offer the premium Perfect Dot(TM) night sight as a front sight post designed to work with the popular Magpul(TM) MBUS ProA(C) 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 ProA(C) Flip Up Front Sight and is 0.040'' in width. MBUS ProA(C) front sight body not included, shown in photo for complete front sight picture only.