Patent ID: 11971238
Assignee: MAGPUL INDUSTRIES CORP.
Field: Control (Instruments)
Classification: CPC F  G | IPC F  G

Claim 0:
1. A round counting system for a firearm, the system comprising:
a magazine, a follower, the follower comprising one or more magnets, and the magazine comprising:
magnetic switches arranged substantially along a path of the one or more magnets when the follower moves along a length of the magazine, the magnetic switches configured to activate based on a position of the one or more magnets relative to the magnetic switches and a respective magnetic field at the magnetic switches exceeding a threshold;
a first antenna arranged on or within the magazine, the first antenna configured to fit within an inner perimeter of a magazine well of the firearm and parallel to a firing direction of the firearm when the magazine is inserted into the magazine well, the first antenna configured to wirelessly transmit at least one of an indication of one or more active magnetic switches of the magnetic switches, round count data, or a round count indication to a second antenna within the inner perimeter of the magazine well of the firearm, wherein the first antenna wirelessly receives power from the firearm, and wherein the power from the firearm is used to power the magnetic switches; and
the second antenna having an area that mostly overlaps with an area of the first antenna.