Originally Posted by
RevolverRob
So, let's bear a couple of things in mind.
Lasers, when used in conjunction with iron sights only - are not for target/dot focused shooting. They should be sighted in at the distance the iron sights are sighted to. The laser acts like a "beacon" for your front sight. Imagine shooting a blank black piece of paper and you're aiming for the center, you kind of get there, but it's not so precise, since the front sight is homogeneous with the paper. Now, take that piece of paper and put a white dot in the center, it's easier to aim at the center, right? Now, imagine that in low/moderate/dim light that the center of that target glows like the red or green beacon on a cellphone tower to alert planes. Aim for the glowing bit and press the trigger. That's how lasers are supposed to be used. A properly sighted laser 'halos' the front sight at the sighted distance (and provides a sun-spot like background at closer distances) thus providing a distinct aiming point.
Lasers can also be used for getting accurate hits from non-traditional positions (hip fire, etc.) Not ideal, but that adds utility to the gun.
Now, lasers change to target focus-type shooting when used in conjunction with the MRDS, you're looking for the dot in the window and the laser dot - they should overlap, they overlap, press the trigger, boom. It's an aiming point on an aiming point (maybe even with a third if you use iron sights that are 6 o'clock and your MRDS and laser are sighted to sit right on top of the sights). Sometimes when shooting, you lose the dot. So you have to go back looking for it. In this case, you might find the MRDS dot first or the laser grip dot first (or if you're like me, you tend to track the damn front sight and find it first and then you fight to find the damn dot still), when looking for the dot.
.…
There is no "focus switching" in these scenarios. There should never be "focus switching' for lasers. With sights, it's a front sight focus, dot acts as illuminated aiming point, with dot sight, target focus, find the dots, overlay them, press the trigger. Only in the scenarios where you use the dot from a non-traditional position might there be "focus switching" (and only in the iron sights + dot scenario).