Twin laser - NCSTAR Green/Red Laser Sight with Rail Mount

This is a good laser. Everything works as advertised. If you buy this model, I strongly recommend the application of Loctite to the adjustment screws as they are very loose.

I will not be using this laser because of its design. I did not think of this until after the order was shipped. The problem is that the lasers are not on a 90 degree axis to the barrel of the rifle. The effect that that will have is that when your target is closer or farther than where the laser is sighted, your point of aim changes diagonally instead of vertically (as opposed to the laser being mounted below or above the barrel)and that makes it a little difficult to compensate for whereas if it's mounted perpendicular to the barrel. With the laser mounted perpendicular to the barrel, adjusting for the difference in distance is more intuitive. Also, making adjustments will almost always require adjustment of the windage and the elevation screws to compensate for the off perpendicular mounting.

This may not be an issue to some, but, for me it is since I prefer to operate any firearm intuitively rather than have to think outside the realm of intuitiveness; which may adversely affect the outcome of a situation. In high stress situations, we operate best using basic instincts.

Even if you mount this unit on the side of a barrel, the geometry will not change. This unit needs to be redesigned so that the lasers are mounted on top of one another. Then, it will be a good laser to use.