detailed description of the front sight unit 46 will follow below fig5 is an enlarged right side cross sectional view 49 a of the led light installed 49 in the led compartment 47 a within the front sight unit 46 the illustration shows the led 35 housed in the front of the led compartment 47 b flush against the aperture 47 d which allows light produced by the led 35 from inside of the led compartment 47 a to be seen in the form of a luminous red dot 35 a on the front sight face 47 e of the front sight 47 the back of the led compartment 47 c holds the led flange 50 with two attached lead wires identified as a led positive lead wire 50 a and a led negative lead wire 50 b securely in place within the led compartment 47 a the led positive lead wire 50 a and led negative lead wire 50 b extend downward out from the back of the led compartment 47 c into the vertical wire groove 48 b continuing to travel downward past the front sight base rim 48 a thru the front sight base 48 to the vertical wire groove 48 b then into the horizontal wire groove 48 c until ending flush with the front sight base 48 fig5 a is an enlarged top cross sectional view 49 b of the led light installed 49 in the led compartment 47 a within the front sight unit 46 showing the same.