Patent ID: 8069602

Claim:
An adjustable dual stage trigger assembly comprising: a hammer configured to be powered by a hammer spring, a trigger configured to be preloaded by a trigger spring, and an adjustable disconnector assembly including a disconnector lever; the hammer configured to be pivotally connected with a first pin to a receiver of a firearm, the hammer including a primary sear hook and a secondary sear hook; the trigger defining a body extending from a first end to a second end, the trigger configured to be pivotally connected with a second pin through the firearm receiver, the trigger including a trigger sear hook positioned at an intermediate location between the first end and the second end of the trigger body, the trigger sear hook configured to engage the primary sear hook when the firearm is in a cocked position; the disconnector lever configured to be pivotally connected to the firearm with the second pin and configured to be operably connected with the trigger; a first adjustment screw having at least a portion extending into the disconnector lever, the first adjustment screw defining a first diameter, the first adjustment screw adjustable by a user of the firearm for adjusting the compression of a disconnector spring located between the disconnector lever and the trigger for adjusting the rotational resistance of the disconnector lever with respect to the trigger, wherein the disconnector spring defines a second diameter larger than the first diameter; a cylindrical rod including a first portion slidably engaged with the disconnector lever and a second portion engaged with the disconnector spring; the first portion of the cylindrical rod having an end contacting the first adjustment screw for allowing the user to slidably move the first portion of the cylindrical rod with respect to the disconnector lever by turning the first adjustment screw, thereby allowing the user to adjust the compression of the disconnector spring located between the disconnector lever and the trigger; and a second adjustment screw adjustable by the user of the firearm for adjusting a rotational position of the disconnector lever with respect to the trigger so as to control the amount of overlap remaining between the trigger sear hook and the primary sear hook after the trigger has been at least partially pulled and the secondary sear hook has contacted the disconnector lever, wherein both the first adjustment screw and the second adjustment screw are located between the first end of the trigger body and the trigger sear hook.