Firearm flash hider

Abstract

A firearm flash hider can include a base module having an attachment surface, an exit surface opposite the attachment surface, and a projectile aperture oriented through the base module to allow a projectile to pass therethrough. The flash hider can include a plurality of contoured deflection walls extending longitudinally from the exit surface and further extending radially from a longitudinal boreline axis extending from the attachment surface to the exit surface along the projectile aperture. The contoured deflection walls can block a line of sight to the boreline.

1 . A firearm flash hider comprising:
 a base module having an attachment surface, an exit surface opposite the attachment surface, a projectile aperture oriented through the base module to allow a projectile to pass therethrough, and a longitudinal boreline axis extending from the attachment surface to the exit surface along the projectile aperture, the projectile aperture being fluidly coupleable to a muzzle end of a firearm; and   a plurality of contoured deflection walls extending longitudinally from the exit surface and extending radially from the projectile aperture, wherein the plurality of contoured deflection walls are oriented to block a line of sight to the boreline at all points along a plane perpendicular to the boreline and intersecting the boreline along the plurality of deflection walls.   
     
     
         2 . The flash hider of  claim 1 , wherein the projectile aperture has a diameter to allow a projectile having an outside diameter of from 4 mm to 40 mm to pass therethrough. 
     
     
         3 . The flash hider of  claim 1 , wherein the projectile aperture is fluidly coupleable to a muzzle end of a firearm via an intermediate accessory. 
     
     
         4 . The flash hider of  claim 3 , wherein the intermediate accessory is a sound suppressor. 
     
     
         5 . The flash hider of  claim 3 , wherein the intermediate accessory is a recoil compensator. 
     
     
         6 . The flash hider of  claim 1 , wherein the projectile aperture is fluidly coupleable to a muzzle end of a firearm via at least one of bayonet-style connectors, lateral-sliding connectors, threaded engagement, recessed locking, interference fit, and detent locking. 
     
     
         7 . The flash hider of  claim 1 , wherein the plurality of contoured deflection walls includes from 3 to 5 deflection walls. 
     
     
         8 . The flash hider of  claim 1 , wherein the plurality of contoured deflection walls extends longitudinally from the exit surface to a height of from 2 cm to 10 cm. 
     
     
         9 . The flash hider of  claim 1 , wherein each of the plurality of contoured deflection walls has a plurality of bends interspersed along a length thereof, wherein the plurality of bends are angled in a common deflection direction. 
     
     
         10 . The flash hider of  claim 9 , wherein the plurality of bends includes from 2 to 4 bends. 
     
     
         11 . The flash hider of  claim 9 , wherein each of the plurality of bends is angled to absorb energy transferred from firearm discharge gasses. 
     
     
         12 . The flash hider of  claim 9 , wherein the plurality of bends include a first bend having a first bend angle from 5° to 40°, and a second bend having a second bend angle from 5° to 40°. 
     
     
         13 . The flash hider of  claim 1 , further comprising a plurality of recesses formed in the exit surface of the base module and interspersed between the plurality of contoured deflection walls. 
     
     
         14 . The flash hider of  claim 1 , wherein the flash hider is formed of a material selected from the group consisting of titanium, high impact polymers, stainless steels, aluminum, molybdenum, refractory metals, super alloys, aircraft alloys, carbon steels, and composites thereof. 
     
     
         15 . The flash hider of  claim 1 , further comprising a coating selected from the group consisting of diamond coatings, diamond-like-carbon coatings, molybdenum, tungsten, tantalum, or a combination thereof. 
     
     
         16 . The flash hider of  claim 1 , wherein the plurality of contoured deflection walls have a distal end surface that has an inclined taper toward radial outer edges of the distal end surface. 
     
     
         17 . The flash hider of  claim 1 , wherein the plurality of contoured deflection walls are substantially identical in shape. 
     
     
         18 . The flash hider of  claim 1 , further comprising a circumferential set of channels extending from peripheral gas outlets oriented within the base module, the set of channels also oriented radially outward of the plurality of contoured deflection walls. 
     
     
         19 . The flash hider of  claim 1 , wherein the plurality of contoured deflection walls have substantially uniform thickness.