guys, how well do they stay sighted in? I dont expect pin point shot after shot for for say 7-15 yards are they fairly on the money as far as grouping goes? My main intent is for play at the range or just to have that red dot which could de escalade a situation fast. I just ordered the laser grips to play around with for now but im just worried about hiow those may effect the grip and concealability. Thanks in advance.