Target acquisition is faster with a bead. All the professional exhibition shooters set speed and number of targets broken records with a bead. From the AIP Tactical web site:
"Ghost rings can get you killed ( my opinion)." Bead sight or rifle sights and yes the tritium inserts for the rifle sights are worth it on this weapon."
That is the owner of AIP's "opinion" not mine. I'll take his advice. This is home defense, not a war.