Adjusting the M4 sights

[BlueCrabMafia]

Has anyone had trouble zeroing the M4 .22? My windage knob does not bottom out at the 6/3 mark. When I have it set at 6/3 it does not sit flush with the bottom. I can continue to rotate it farther down, but not far enough to get back to the 6/3 mark.  :confused:

[techmike]

I never fired mine with the iron sights, but I have my rear sight in hand, and it goes 180 degrees past 6/3 before it bottoms out.

[Elessar]

I had to bottom out the rear also, but it's dead on now.  Took a little fiddlin' wit it, but she shoots straight now.  I was amazed how well it reached out to 100 yards.