Shaw AR-15 6.5 Grendel Threaded Barrel Spiral Flute 20in HBAR Profile 1-8 Twist 5/8-24 Thread Matte Stainless. Shaw is now proud to offer complete barrels directly to consumers. Specifications for Shaw AR-15 6.5 Grendel Threaded Barrel: Manufacturer: Shaw Color: Steel Finish: Matte Fabric/Material: Stainless Steel Caliber: 6.5mm Grendel Barrel Profile: HBAR Gas System Length: Rifle Length Gas Block Journal Size-Diameter: .750 in Threads per Inch: 5/8x24 Barrel Twist Rate: 1-8 Barrel Material: 416R Stainless Steel Gun Make: AR Platform Gun Model: AR-15 Gun Type: Rifle Package Contents: Shaw AR-15 6.5 Grendel Threaded Barrel What firearm models does the manufacturer say Shaw AR-15 6.5 Grendel Threaded Barrel is compatible with? The manufacturer says that Shaw AR-15 6.5 Grendel Threaded Barrel is compatible with AR-15Shaw AR15HBSSHF20GRENT2: AR-15 6.5 Grendel Threaded Barrel Spiral Flute 20in HBAR Profile 1-8 Twist 5/8-24 Thread Matte Stainless