TiPX/X7-Phenom/M17 8-Inch BigShot Assault

Threads: TiPX/X7-Phenom/M17 Bore Length: 7 inch Control Bore / 8 inch with Tip Bore Options: .679, .684, .687, .690 Finish: Matte Finish Barrel outside diameter is 7/8"   TCR Note: This barrel length doesn't extend outside of the TCR shroud.   Not Recommended for use in the A5/X7 as the bolt will jam. MilSig, Valken CQMF/M17 can use A5 or TiPX barrels but for better efficiency, we recommend the TiPX barrels.