Pistol gun pouches, or sidearm pouches, include secure and easy to access handgun holsters and containers. They can be large and used to conceal carry, or simple and overt hip holsters.
A holster is not a good pistol case. A case should be made to house ammo, accessories, and the gun itself, and should be secured from impact and dust. Civilian cases should also be lockable.
Best choices would be either buying a case from the specific manufacturer of the handgun itself, or from a tactical gear manufacturer. UARM offers several gun cases that can house most pistol models.