Compact Tactical Red/Green Beam Laser Sight,Laser Dot Sight Scope for Rifles Pistols Handguns fits Standard 20mm/11mm Picatinny Rail Mount

The sight was easy to install, looks well built, and works out well on a 22 caliber rifle. I don't know how it would do on a high caliber one. It shines brightly in the sun at 30 to 40 yards. I would buy again.

Exactly what you ordered and on time

Set screw on adjustment of red doesn't hold well after adjusting.

This review is for the Mosandon red and green laser pointer gun sights. The RED laser is invisible in sunlight. It's bright indoors and faintly visible in the shade - and that's it. There is no possible way this could be used outdoors in daylight. The GREEN laser is more visible but still not good enough in sunlight. And literally everything else is wrong. First and most amazingly: the laser housing is too narrow to be held by the mounting clamps, on both the 11mm or the picatinny rails !! Look at the picture here which shows that with the clamp tightened on the 11mm rail there's still a huge gap on both sides of the sight housing! So the sight just rattles around loose! And the same is true with the clamp flipped over to use the picatinny rail. Incredible. Using some metal shim stock and I finally got a tight grip on the picatinny rail so that I could at least try the sight. Then I found that the adjustment set-screws move against almost no resistance, so the settings continually change while shooting. The point of impact will drift further away with each shot - while aimed at the same spot. Soon it's inches away from where it started, at a 20' range. It's baffling to me that a company will make a product with multiple deal-breaking flaws, all of which could be easily avoided or corrected. Then you'd have a usable gun sight well worth the money. Instead, *every single one of these will be returned*.

Good laser I like the battery being compatible with my other lasers and lights. However, because of its design not having a cross pin for the rail slot. The unit will Not stay on my Glock 31 and 32 .357 sig. No matter how tight u make it. It Will however, stay put on a 9mm like my Glock 17 and Glock 45 without trouble.

Love it

Works great!

I mounted this laser on a Glock 41 MOS (45ACP long slide with MOS mount) in place of using a optical sight. The green dot is larger in diameter than I was expecting and the brightest dot I could imagine. In a dark room the green dot is extremely bright and would be intimidating in itself. At 4am I went outside and I could easily see the green dot 3+ blocks away. I put a laser in the barrel and the windage did not need adjusting.