Round counter for firearm

A round counter for a firearm comprising:

• a magazine adapted to store a plurality of ammunition rounds for use in the firearm, the magazine comprising a magazine body having a sidewall;
• a round follower positioned within the magazine below the plurality of ammunition rounds, the round follower moving within the magazine body as ammunition rounds are added to or removed from the magazine;
• a linear potentiometer attached to the magazine body sidewall;
• a wiper that is connected with the round follower and that contacts the linear potentiometer;
• one or more electronic components that receive information from the linear potentiometer relating to the position of the wiper and that transmit information relating to the number of ammunition rounds remaining in the magazine;
• and
• a display that received the information from the electronic component and displays information relative to the number or ammunition rounds remaining in the magazine in a user readable format.