Vltor VC-301 Flash Hider (Extended Length) 5/8-24 RH – 7.62, .308, 6.8 SPC
The Vltor VC-301 flash hider is made of hardened 4130 steel, and features a manganese phosphate surface coating. This muzzle device features an open-bottom, five-port design, similar in configuration to the original A1 birdcage. Thread pattern is 5/8-24. Bore diameter is .343″