Patent ID: 8112928

Claim:
A trigger system for a firearm, comprising: an enclosure having a bottom surface; a trigger pivoted at a first pivot axis within the enclosure, the trigger having a finger extension through the enclosure bottom surface, such that a user may rotate the trigger clockwise around the first pivot axis by pressure on the finger extension; a firing hammer pivoted at a second pivot axis within the enclosure, forward from the first pivot axis, the firing hammer spring-loaded to rotate clockwise to fire, the firing hammer having a first notch; a disconnector pivoted at the first pivot axis, the disconnector having a hook for engaging the first notch in the firing hammer, which when engaged prevents the firing hammer from rotating clockwise to fire; and a full auto rocker pivoted at a third pivot axis through the trigger between the first and the second pivot axes, the full auto rocker having a first portion extending downward and forward from the third pivot axis and a second portion extending rearward from the third pivot axis, a part of the second portion overlying a contact point on the disconnector to the rear of the first pivot axis; wherein with a safety selector positioned in semiautomatic fire mode, rotation of the trigger clockwise to a first position, through a first angle, causes the first portion of the full auto rocker to contact the bottom surface of the enclosure, and further clockwise rotation of the trigger beyond the first position causes the full auto rocker to rotate counterclockwise about the third pivot axis, which causes the second portion of the full auto rocker to urge downward on the disconnector at the contact point, rotating the disconnector also counterclockwise, leaving the firing hammer unrestrained to fire repeatedly in full automatic mode.