StrongTools Red or Green BoreSighter 177 to 12GA Caliber Rifle Scope Handgun Hunting Red/Green Dot Boresight Kit Press Switch Bore Sight 800mAh Battery

I’ve got this one from Amazon:StrongTools Green Laser. https://www.amazon.com/dp/B07DZ5BYFG?ref=ppx_pop_mob_ap_share The green laser is much more visible than the red one. This one is working fantastic for me. I mounted it on a AR projecting the dot at 33’ and I marked the spot on the wall. When looking through the bore that spot was perfectly centered. If I spin the laser inside the barrel the projected dot doesn’t wobble at all. It seems perfectly centered. That being said, I don’t know if their QC is flawless or I lucked out.