Which malfunction is typically linked to improper cleaning and maintenance of the M249 AR?

The malfunction that is typically linked to improper cleaning and maintenance of the M249 AR is a failure to feed. This type of malfunction occurs when the ammunition does not properly enter the chamber, which can be a direct result of fouling, dirt, or debris accumulated within the feed mechanism. If the weapon is not cleaned regularly, these contaminants can interfere with the mechanical feeding of rounds from the ammunition belt or magazine, resulting in a failure to feed.

Proper maintenance includes not only regular cleaning but also lubrication of the moving parts. This ensures that all components function smoothly and helps prevent malfunctions. A clean weapon is essential for reliable cycling during firing, and neglecting to maintain cleanliness can lead to jams and feeding issues.