Have you done any test with this RD or did you return?
For a good cheap RD, I have a Bushnell TRS-32 Tactical on one of my AR15's that has been very good. The TRS-25 has gotten rave reviews and Primary Arms is also cheap quality w/great CS.
US Air Force 73-77
57th Munitions Maintenance Squadron F4 Phantom
Nellis AFB, Nevada
Life Member of NRA
Lifetime "Conservation Partner" Permit Holder