There are some allen screws on the ARMS 39A2 and I wondered if they are adjustment points for the user.

My Bushmaster AR15 carbine is shooting low, even after a 25-click adjustment on the EOTech 512 scope  mounted over the hand guards.

Bill

Thanks very much, Mike.

I'll crank in more clicks.

Much appreciated!

Bill

I later noticed that the brush guard on the ARMS 39A2 front was pushed tight against the AR-15 hand guard.  That is, it may have kept the 39A2 pointing up slightly.

I remounted the 39A2, after swinging the brush guard out to the side.  There was a dent in the hand guard from the previous mounting.

The brush guard is not required for my use.

I'll see if there is a change in the impact point, before adjusting the Eotech.

My initial sighting efforts were at 25 yards.  I hope that is not the problem.

Quoted: My initial sighting efforts were at 25 yards.  I hope that is not the problem.

FWIW most use the IBZ Santose method 50 yard zero described here: http://groups.msn.com/TheMarylandAR15ShootersSite/zeroingmethods.msnw, with red-dots such as your EO or Aimpoints.

Mike

50 yards it will be.

Thanks, Mike.