The most frequent way to do this is with an Allen key. Simply insert the key into the hole on the side of the trigger guard and unscrew it. Some triggers have screws on the inside as well that will need to be removed in order to take off the trigger guard completely. Be sure to make note of which screw goes where, as they may need to be put back in place when reassembling the gun.
Mike Seeklander Answered question September 9, 2022