KAK Industry Retro Extended Flash Hider Features The KAK Industry Retro Extended Flash Hider draws its design directly from the XM-177 Moderator giving builders a period-correct look for retro AR-15 builds while still functioning as a modern muzzle device. Five flash hiding ports are machined into the body to disperse muzzle flash and reduce the shooter s visible signature when firing in low light. At 4.15 overall length the flash hider is long enough to bring a 12.5 barrel up to legal non-NFA overall length when pin and welded in place a common configuration for shooters who want a shorter barrel without the NFA paperwork of an SBR. The 1/2x28 thread pitch threads directly onto standard 5.56 AR-15 barrels. Heat treatment hardens the flash hider against the extreme temperatures generated by sustained firing strings helping it resist warping or discoloration over time. A phosphate coating further protects the finish from corrosion keeping the device functional through repeated range sessions and field use. Milled flats on the body give a wrench clear purchase points for installation or removal. The device is pre-drilled at .125 for pin and weld applications though a crush washer is not included and should be purchased separately. The KAK Industry Retro Extended Flash Hider is a retro-styled functional muzzle device for sale at GrabAGun for AR-15 builders. KAK Industry Retro Extended Flash Hider Specifications Manufacturer: KAK Industry Model: Retro Extended Flash Hider Type: Flash Hider Caliber: 5.56 Compatible Hosts: AR-15 Color: Black Finish: Phosphate Thread Pattern: 1/2x28 Overall Length: 4.15 Flash Hiding Ports: 5 Available At: GrabAGun