Unless you are an olympic shooter, shooting a handgun is very difficult. Doing ANYTHING to stabilize the gun will only increase your accuracy. This can be accomplished by giving the gun a stock, and possibly another grip up front.
Most guns don't fit well together in a case. So if you can do anything to combine all three, including a very easy way to store the gun, you've done very well.
Add onto that a way to protect the moving parts of the gun, and you can increase its reliability.