Firearm receiver with adjustable positioning assembly

Abstract

A firearm receiver includes a lower receiver body having a pair of takedown pin openings that are positioned along each side, and a bolt channel that extends diagonally from the back end of the receiver body to the inside of the receiver body. A takedown pin assembly is positioned within the receiver body and is in communication with the bolt channel. The takedown pin assembly including a takedown pin that is selectively positioned within the pair of takedown pin openings. The takedown pin assembly including a cam-pin and securement bolt that engage a lock tensioner that is connected to the takedown pin. The cam-pin transitioning between an engaged position and a disengaged position. In the engaged position, the cam-pin imparts a downward force onto the lock tensioner, takedown pin and an upper receiver that is connected to the takedown pin.

1 . A firearm lower receiver, comprising:
 an elongated body having a top end, a bottom end, a front end, a back end, a pair of side surfaces, and a block section positioned between the pair of side surfaces;   a pair of takedown pin openings that are positioned along each of the pair of side surfaces, said pair of takedown pin openings being configured to receive a takedown pin; and   a takedown pin assembly that is in communication with the block section,   wherein the takedown pin assembly is configured to engage the takedown pin.   
     
     
         2 . The firearm lower receiver of  claim 1 , wherein the takedown pin assembly includes functionality for selectively imparting a pulling force onto the takedown pin in a direction that is toward the bottom end of the elongated body. 
     
     
         3 . The firearm lower receiver of  claim 1 , wherein the takedown pin assembly includes at least one adjustment arm for transitioning between an engaged position and a disengaged position. 
     
     
         4 . The firearm lower receiver of  claim 1 , wherein the pair of takedown pin openings include an oval shape. 
     
     
         5 . The firearm lower receiver of  claim 1 , wherein the takedown pin assembly further comprises:
 a generally U-shaped block tensioner having a bottom surface and a pair of arms; and   a first opening that is positioned along one of the pair of arms; and   a second opening that is positioned along the other of the pair of arms.   
     
     
         6 . The firearm lower receiver of  claim 5 , wherein the block tensioner is selectively positioned along the block section, such that the first opening and the second opening are each aligned with one of the pair of takedown pin openings. 
     
     
         7 . The firearm lower receiver of  claim 5 , further comprising:
 a securement bolt that is selectively positioned within the bolt channel.   
     
     
         8 . The firearm lower receiver of  claim 7 , wherein the securement bolt is connected to the bottom end of the block tensioner. 
     
     
         9 . The firearm lower receiver of  claim 8 , further comprising:
 a cam channel that is positioned along the receiver body at a location parallel to the pair of takedown pin openings.   
     
     
         10 . The firearm lower receiver of  claim 9 , wherein the cam channel bisects the bolt channel. 
     
     
         11 . The firearm lower receiver of  claim 10 , further comprising:
 a cam-pin having an elongated shaft that is positioned within the cam channel.   
     
     
         12 . The firearm lower receiver of  claim 11 , wherein the cam-pin selectively engages the securement bolt positioned within the bolt channel. 
     
     
         13 . The firearm lower receiver of  claim 11 , further comprising:
 an aperture that is located along a middle portion of the elongated shaft of the cam pin.   
     
     
         14 . The firearm lower receiver of  claim 13 , further comprising:
 a recession that is positioned adjacent to the aperture on the cam pin.   
     
     
         15 . The firearm lower receiver of  claim 14 , wherein the securement bolt is positioned through the aperture on the cam pin, and
 wherein the securement bolt selectively engages the recession.   
     
     
         16 . A firearm, comprising:
 an upper receiver having a first pair of takedown pin openings;   a lower receiver that includes an elongated body having a top end, a bottom end, a front end, a back end, a pair of side surfaces, a block section positioned between the pair of side surfaces, and a second pair of takedown pin openings; and   a takedown pin assembly that is in communication with the block section and positioned adjacent to the second pair of takedown pin openings,   wherein the takedown pin assembly is configured to engage a takedown pin that is positioned through each of the first pair of takedown pin openings and the second pair of takedown pin openings.   
     
     
         17 . The firearm of  claim 16 , wherein the takedown pin assembly includes functionality for selectively imparting a pulling force onto the takedown pin in a direction that is toward the bottom end of the lower receiver. 
     
     
         18 . The firearm of  claim 16 , wherein the takedown pin assembly includes functionality for transitioning between an engaged position and a disengaged position. 
     
     
         19 . The firearm of  claim 18 , further comprising:
 at least one adjustment arm for manually transitioning the takedown pin assembly between the engaged position and the disengaged position.   
     
     
         20 . The firearm of  claim 16 , wherein the pair of takedown pin openings include an oval shape.