Upper receiver device

Abstract

The Upper Receiver Device (URD) is a safety invention to protect a left handed person from shooting a right handed rifle and the hot spent cases striking them in the face, eyes and neck which may cause burns, blindness and other injuries. The left side Upper Receiver Device (URD) is new and an improvement in the left handed rifles. The Lefty URD is different from those used by right handed rifles as you look at them in the right and left side. The bolt lock, carrier of the Lefty URD is different in the number of ridges. The bolt lock, gas hole and the internal components are different and must be manufactured to the Lefty URD specifications. We reference the AR-10 and other rifles with various substitutions and modifications this invention applies to other firearms and is included in this disclosure.

1 . A receiver for a firearm wherein spent cartridge casings are ejected in a rearward trajectory of motion at a side ejection port thereof, said port having a backstop rib means at its rear position, said receiver ejecting casings whose rearward motion is stopped when striking said backstop rib means and also casings whose rearward motion is not stopped despite striking, or by completely missing of, said backstop rib means and continue in a rearward trajectory towards the person of the shooter, said receiver comprising a boss thereon to change the rearward trajectory of those non stopped casings so they can never strike the physical body of the shooter, on account of their changed trajectory. 
     
     
         2 . A receiver for a firearm wherein spent cartridge casings are ejected in a rearward trajectory motion at a side ejection port thereof; said port having a back stop means at its rear position, said receiver ejecting cases whose rearward motion is stopped when striking said back stop means and continue in a rearward trajectory, said receiver comprising a boss thereon to change the rearward trajectory of those casings which are not stopped so those non-stopped cases which in their rearward motion reach as far back as the body position of a shooter of said firearm, cannot nonetheless strike the physical body of the shooter, on account of their changed trajectory. 
     
     
         3 . A receiver as in  claim 2  wherein said firearm is a rifle. 
     
     
         4 . A receiver as in  claim 3  wherein the changed trajectory is to be in a direction going above the head of the shooter.