This bolt assembly is machined from the correct mil-spec Carpenter No. 158® steel, shot peened for increased strength, includes tool steel machined extractor and ejector, BCM Extractor Spring, and is HPT (High Pressure Tested) and MPI (Magnetic Particle Inspected).
The 6.5 Grendel version of the JP EnhancedBolt™ is compatible with any AR-15 platform using a Mil-spec bolt carrier and 6.5 Grendel sub-components. This is a Type II bolt assembly and conforms to current SAAMI specifications for the 6.5 Grendel cartridge.
The 6.8 SPC II/.224 Valkyrie version of the JP EnhancedBolt™ is compatible with any AR-15 platform using a mil-spec bolt carrier and 6.8 SPC II or .224 Valkyrie sub-components. This bolt comes assembled with the same JP-designed extractor used on their 6.5 Grendel bolt.