The KAK Industry A2 Extended Flash Hider is specifically designed to bring 14.5" barrels to just over 16" when pinned and welded ensuring compliance while maintaining the classic A2 flash hider profile.KAK Industry A2 Extended Flash Hider1/2x28 thread pitch for 5.56 NATO caliber2.060" overall length for proper barrel length compliancePre-drilled hole for pin and weld installationHeat treated and phosphate coated for durabilityMilled flats for secure installationCrush washer not includedPerfect for AR-15 builds requiring compliance with barrel length regulations while maintaining effective muzzle flash reduction and the traditional A2 aesthetic.