Removable foregrip with laser sight

Abstract

A sight assembly removably attachable to a firearm includes a foregrip, a quantum cascade laser disposed within the foregrip, and a power source operably connected to the quantum cascade laser.

1 . A sight assembly removably attachable to a firearm, the sight assembly comprising:
 (a) a foregrip;   (b) a quantum cascade laser disposed within the foregrip; and   (c) a power source operably connected to the quantum cascade laser.   
     
     
         2 . The assembly of  claim 1 , further including a heat shield disposed between the quantum cascade laser and a portion of the foregrip. 
     
     
         3 . The assembly of  claim 1 , wherein the quantum cascade laser produces a beam having a wavelength between approximately 2 μm and approximately 30 μm. 
     
     
         4 . The assembly of  claim 1 , further including a heat shield disposed between the quantum cascade laser and a barrel of the firearm. 
     
     
         5 . The assembly of  claim 1 , wherein the power source is disposed external to the foregrip. 
     
     
         6 . The assembly of  claim 1 , further including a cooling element thermally connected to the quantum cascade laser. 
     
     
         7 . The assembly of  claim 6 , wherein the cooling element is active. 
     
     
         8 . The assembly of  claim 6 , wherein the cooling element is disposed within the foregrip. 
     
     
         9 . The assembly of  claim 1 , further including a second light source with the foregrip different than the quantum cascade laser. 
     
     
         10 . A sight assembly removably attachable to a firearm, the sight assembly comprising:
 (a) a quantum cascade laser adjustably mounted within a foregrip;   (b) a second light source disposed within the foregrip; and   (c) a power source electrically connected to the quantum cascade laser and the second light source.   
     
     
         11 . The assembly of  claim 10 , wherein a position of the second light source is adjustable relative to a position of the quantum cascade laser. 
     
     
         12 . The assembly of  claim 10 , further including an adjustment assembly configured to position the quantum cascade laser and the second light source relative to the foregrip. 
     
     
         13 . The assembly of  claim 12 , wherein the adjustment assembly positions the quantum cascade laser in unison with the second light source. 
     
     
         14 . The assembly of  claim 10 , further including a cooling element thermally connected to the quantum cascade laser. 
     
     
         15 . The assembly of  claim 10 , wherein the power source is disposed external to the foregrip. 
     
     
         16 . The assembly of  claim 10 , wherein a position of at least one of the quantum cascade laser and the second light source can be adjusted while the foregrip is connected to the firearm. 
     
     
         17 . A sight assembly for a firearm, comprising:
 (a) a quantum cascade laser disposed within a foregrip; and   (b) a second light source disposed within the foregrip, a vertical axis of at least one of the quantum cascade laser and the second light source being co-linear with a vertical axis of a firearm barrel when the foregrip is attached to the firearm.   
     
     
         18 . The assembly of  claim 17 , wherein the quantum cascade laser and the second light source are aligned with the vertical axis of the barrel. 
     
     
         19 . The assembly of  claim 17 , further including a third light source disposed within the foregrip, a horizontal axis of the third light source being collinear with a horizontal axis of at least one of the quantum cascade laser and the second light source. 
     
     
         20 . A sight assembly for a firearm, comprising:
 (a) a foregrip;   (b) a first light source disposed within the foregrip, the first light source emitting a beam having a wavelength between approximately 2 μm and approximately 30 μm; and   (c) a second light source different from the first light source adjustably mounted with respect to the first light source within the foregrip.   
     
     
         21 . The assembly of  claim 20 , wherein the second light source emits a beam having a wavelength between approximately 0.9 μm and approximately 2.5 μm.