JP Enterprises Supermatch Barrel With Headspaced Jp Enhanced Bolt 6.5 Grendel 18in Black JPSM6.5G-18L8R-BT. 5 Grendel: Manufacturer: JP Enterprises Finish: Machined Stainless Fabric/Material: 416R Stainless Cartridge: 6.5mm Grendel Gas System Length:...