The Remington 870 is a pump action shotgun model that is one of the best in the world. There are many different versions of the Remington 870 and each version is made for different purposes. The Remington 870 Police version is based off the Remington 870 Express model. The Express was always considered an important shotgun in the sporting, home defense and recreational shooting market. But despite the cosmetic differences of the various Remington 870 shotguns, they all have very similar parts inside of them. The Remington 870 Police uses the same platform as the 870 Express because they are both suitable for the streets and tactical use. However the functionality of the 870 Police version is superior to that of any other Remington 870 version.