I received this last week, pretty fast shipping from China. It was a bit bigger than i thought, but damn, it was bright. You could see the beam in daylight. I mounted it on my Beretta px4 & it looked pretty funny as it was way to big for a pistol, but was still fun.
I then attached to my ar-15 & went to range to sight in. It took a while as all adjustments are basically circular adjustments, not true left/right or up/down adjustments, but did get it to zero in. This past weekend, I took it pig hunting & it was amazing. I shot the first pig holding the rifle normally using both laser & iron sights, the next 3 I shot holding the rifle at waist level just using laser sight & everyone was dead on(pun intended). All shots were between 75 to 90 yards. I was happy that the laser held zero as I really was doubting based on the way the set screws are. But the .223 is pretty light recoil, next I will attach to a .450 marlin & see how it holds up. All in all, not bad for 40 bucks.