None that I know of, the standard 2240 has no way of mounting a laser without some sort of modification.
No
Once you activate the laser sight, basically where the laser is pointed is where the bullet is going to go.
The difference is that red-dot sights have contained aiming reticles, whereas laser sights use an emitted laser beam that must fall onto a target. Red-dot sights are used mainly for more accurate ADS (aiming down sight) firing and laser sights allow for less-accurate, but made more so, shoulder-firing.
Because of the way the 1377 is designed it is not possible to easily attack a laser sight to the pistol underneath. There are a few custom shops that manufacture a custom breech that is longer than the stock breech. Crosman even offers one. You might be able to attach one there. I've attached a scope to one of the 1377's using Crosman part (459MTC) it a Crosman Airgun intermount for scopes. Click on the link below to see the Crosman accessories.
There are laser sights for almost any handun. Try Crimson Trace.
Yes, they sure do chimichanga.
Laser Bore Sights provides the most convenient and accurate method for sighting in rifles of all types. One can purchase one from Amazon, eBay for better choice.
There are several. You can attach laser sights, silencers, flashlights.
For handguns? Yes. Just don't point it at any airplane.
It depends on which Lazier site you have but usually, if it is the button size batteries, they go in FLAT side facing out.
The sights are aligned to point of impact at a specified range and assist in aiming. You can adust the point of impact, by twisting the veiwfinder, then sliding up or down, then twising again.
If you are referring to lasermax laser sights, then perhaps the best place to purchase one online would be www.opticsplanet.com. Here is a direct link to the product: http://www.opticsplanet.com/reviews/reviews-lasermax-laser-sights.html