Sturdy, powerful, and solid. - Sightmark LoPro Green Laser Sight

I put this on the top of my AR15 rail. I have a holo and flip ups. Sits low enough to where you can't notice it when looking down the holo and barely eeks past the front flip up but zero problems and not an issue. Zeroing is very easy and precise. During day you barely can but at night you can see the solid green line go forever, extremely bright. As far as sturdiness on the rail you can grab and pull or pick up your gun constantly by the laser and it doesnt move. Looks wise is also great, makes your gun look real mean and sleek at the same time. It's pretty sweet when you have flip ups, holo, and the laser all zeroed together looking down the sights.