This thing is pure junk - Barska Red Laser Pistol / Rifle Sight AU11069

First it arrived with corroded batteries. Wouldn't go together with laser warning sticker on it. Would not align to actual true sighting. Placed rifle in a mount and tried to use this laser for 100 and then 50 feet. With rifle in mount. Verified that rounds were grouping at 100 feet with less than 1/16th of inch pattern. Laser would get no closer than 14 inches. Tried at 50 feet and would get no closer than 13 inches. Then tried 20 feet, still over 11 inches from actual impact. I tried to force the alignment and simple stripped the screw. Now cat has a new toy. This thing is pure and total junk.