Yes, QK, that was exactly what the mfg. replied to his question. "How am I supposed to regulate this site for my customer's gun?" Evidentally this was a normal prob with their sights as the lady he talked to didn't even hesitate to let him know how to do it. There is no way, I would want to have to monkey with a sight by backing the adg. screw out completely and letting it sit 24 hrs to readjust to factory setting, then having to insert it and giving it a half turn every half hr. until it finally goes where you want it to be. Can you imagine if you had to do that every time you replaced the batteries? What happens under the heavier recoil if you fire plus P's out of your gun, does it lose it's aiming point and you have to reset it again? Too much trouble for me on all of the above. I bought the Lasermax Uni green, they already had the batteries in it, put it on the rail, turned the screw to tighten it down. After turning it on, it only needed about a half inch adj. to put it right on top of the front site at 7 yds. Left the store and loaded it up ready to rock and roll. I personally prefer the green laser to the red since it can be seen in any lighting conditions even sunlight. I'm not planning on standing there a long time letting the BG follow the laser beam back to my pistol either. If I have to pull it and light him up, there won't be more than a second before I fire if he doesn't cease the threat immediately. I sure hope and pray that's what they do, as it's a hell of a lot cheaper than having to go to court to prove self-defense.
Good luck and always stay safe.