Remington 870 Dog Follower Spring (Carrier Latch Spring)

You can improve reliability of your Remington 870 easily. Remington 870 Police shotguns have different Carrier Latch Spring(Carrier Dog Follower Spring). It is from model 1100, & Rem 870 police

Standard Carrier Dog Follower Spring is silver, Remington 870 Police spring (from model 1100) is black:

Heavier carrier latch spring improves reliability and may fix feeding problems if you have them. The main purpose of this spring is to lift next round which comes out of a magazine tube. Remington 870 Police carrier latch spring (1100) will do this much better.