Grip Module Brace Assembly

Abstract

Representative implementations of devices and techniques provide a handgun lower receiver to be used with firing components from a donor handgun. The lower receiver includes additional features to improve stability during a triggering event. The additional features can include a rear attachment port comprising a receptacle with a cavity for receiving a brace extension component. The receptacle can have one or more coupling features for coupling the brace extension component to the rear attachment port.

What is claimed is: 
     
         1 . A handgun lower receiver, comprising:
 a pistol grip having a magazine well integral to the pistol grip;   a body portion integral to the pistol grip having a cavity and one or more features configured to receive a trigger and firing group from a donor handgun;   a slide attachment rail adapted to slideably engage and mate with a handgun slide to slideably couple the handgun slide to the body portion; and   a rear attachment port comprising a receptacle with a cavity for receiving a brace extension component, the receptacle having one or more coupling features for coupling the brace extension component to the rear attachment port.   
     
     
         2 . The handgun lower receiver of  claim 1 , further comprising a rear extension portion integral to the body portion at a first end of the rear extension portion and to the rear attachment port at a second end of the rear extension portion, wherein the rear extension portion protrudes a predetermined length from a rear of the body portion and comprises a rigid support structure for the rear attachment port. 
     
     
         3 . The handgun lower receiver of  claim 1 , further comprising a brace extension component coupled to the rear attachment port and extending a predetermined length beyond the rear attachment port, wherein an end of the brace extension component is inserted into the cavity of the rear attachment port. 
     
     
         4 . The handgun lower receiver of  claim 3 , wherein the brace extension component comprises a hollow or semi-hollow tube having a cross-section comprising at least one of a circle, an ellipse, or a polygon. 
     
     
         5 . The handgun lower receiver of  claim 1 , further comprising an arm brace removably coupled to the body portion at the rear attachment port and arranged to grip an arm of a user. 
     
     
         6 . The handgun lower receiver of  claim 5 , wherein the arm brace is coupled at the rear attachment port via a brace extension component comprising a hollow or semi-hollow tube. 
     
     
         7 . The handgun lower receiver of  claim 1 , wherein the slide attachment rail includes a pair of rails extending from a front extent of the body portion a predetermined length along an upper edge of the body portion, the pair of rails is arranged to engage and mate with a lower edge portion of the handgun slide. 
     
     
         8 . A handgun lower receiver, comprising:
 a pistol grip having a magazine well integral with the pistol grip;   a body portion integral to the pistol grip having a cavity and one or more features configured to receive a trigger and firing group from a donor handgun;   a slide attachment rail including a pair of rails extending from a front extent of the body portion a predetermined length along an upper edge of the body portion, the pair of rails adapted to slideably engage and mate with a lower edge portion of a handgun slide to slideably couple the handgun slide to the body portion;   a rear extension integral to the body portion, extending a predetermined length from a rear of the body portion, the rear extension comprising an integrated support structure for a rear attachment port; and   a rear attachment port integral to the rear extension, the rear attachment port comprising a connection receptacle with a cavity for receiving an inserted brace extension component, the connection receptacle having one or more locking features for locking the brace extension component to the rear attachment port.   
     
     
         9 . The handgun lower receiver of  claim 8 , further comprising an eye guard protruding from an upper portion of the rear attachment port, the eye guard comprising an integrated shield to protect a user's face. 
     
     
         10 . The handgun lower receiver of  claim 9 , wherein the eye guard further comprises a sight mount, wherein the eye guard has one or more accessory sight mounting features on an upper surface of the eye guard. 
     
     
         11 . The handgun lower receiver of  claim 8 , further comprising an accessory rail disposed on a lower surface of the body portion in front of the pistol grip and a trigger guard. 
     
     
         12 . The handgun lower receiver of  claim 8 , further comprising a brace extension component coupled to the rear attachment port and coupled to the rear attachment port via one or more coupling features. 
     
     
         13 . The handgun lower receiver of  claim 12 , wherein the brace extension component comprises an AR style buffer tube. 
     
     
         14 . The handgun lower receiver of  claim 12 , further comprising an arm grip coupled to the brace extension component, the arm grip adapted to grip a forearm of a user to provide stability during a triggering event. 
     
     
         15 . The handgun lower receiver of  claim 8 , wherein the rear attachment port is angled downward at a predetermined angle relative to a primary axis of the lower receiver, such that a brace extension component inserted into and coupled to the rear attachment port is also angled downward at the predetermined angle relative to the primary axis of the lower receiver. 
     
     
         16 . A method comprising:
 providing a handgun lower receiver, including:
 a pistol grip having a magazine well integral with the pistol grip; 
 a body portion integral to the pistol grip, having a cavity; 
 a rear extension integral to the body portion, extending a predetermined length from a rear of the body portion; and 
 a rear attachment port integral to the rear extension, the rear extension comprising an integrated support structure for the rear attachment port and the rear attachment port comprising a receptacle with a cavity for receiving a brace extension component; 
   inserting a trigger and firing group from a donor handgun into the cavity of the body portion; and   slideably coupling a handgun slide from the donor handgun to the body portion by slideably engaging the handgun slide to a slide attachment rail on an upper portion of the body portion.   
     
     
         17 . The method of  claim 16 , further comprising coupling a first end of a brace extension component to the rear attachment port using one or more features of the rear attachment port. 
     
     
         18 . The method of  claim 17 , further comprising coupling an arm grip to a second end of the brace extension component, the arm grip adapted to grip a forearm of a user to provide stability during a triggering event. 
     
     
         19 . The method of  claim 17 , wherein the brace extension component comprises an AR style rifle buffer tube. 
     
     
         20 . The method of  claim 16 , wherein a top edge of the rear extension includes a notched slide recess, the notched slide recess providing clearance for the handgun slide to move over the rear extension during recoil of a triggering event.