Which statement pertains to the ejection port of the Remington model 870?

The statement that pertains to the ejection port of the Remington model 870 encompasses several key functions of this component, and thus the correct answer encompasses all the aspects it encompasses.

The ejection port is a critical area on the firearm that allows spent shells to exit the chamber after firing. This is essential for the proper cycling of ammunition, ensuring that the gun can continue to function smoothly by clearing out empty casings. Additionally, the design and engineering of the ejection port contribute to minimizing jams during firing. A well-designed ejection port enables spent cartridges to be expelled efficiently, reducing the likelihood of obstruction or failure to eject, which are common causes of jams.

Moreover, the extractor, which is a small component that plays a significant role in the extraction and ejection process, is positioned and functions within the ejection port. It grips the base of the spent shell and pulls it out of the chamber as the action cycles, ensuring that the shell is properly ejected.

By affirming that the statement covers all these points, including shell ejection, the prevention of jams, and the housing of the extractor, this decision highlights a comprehensive understanding of the ejection port's multiple roles in firearm operation.