First, barrel length has nothing to do with accuracy, provided it is long enough for the bullet to accelerate to the velocity needed for the rifling to impart enough spin on the bullet for it to be gyroscopically stabilized. A shorter barrel results in a loss of velocity, which effects the terminal ballistics of the round when it hits the target.
Second, a laser is useful in situations where you are unable to use any other targeting mechanism, such as in confined spaces where you cannot get a proper sight picture, military applications where night vision is being used, or as a training aid. Using a laser as the primary targeting mechanism on a carry gun is a poor idea. The reason is that it takes longer to chase down and reacquire the dot that it does to properly realign iron sights or point shoot. The idea that a laser is a good targeting mechanism on a handgun is an urban myth for all but a few extremely rare circumstances.
In my highly prejudiced and biased opinion, the Sig P938 is about the best pocket gun you can get. While its a little larger than the LCP and friends, it's a 9mm rather than .380, shoots more accurately, is more controllable, has real night sights, and you can put a few hundred rounds through it without excessively fatiguing your hand. Plus it's a Sig! Whether your going to carry it in a pocket or in the waistband, a Remora holster works really well.
You now are $0.02 richer, don't spend it all at once
