Shaw AR-15 6 ARC Threaded Barrel No Flute 18in HBAR Profile 1-7.5 Twist 5/8-24 Thread Matte Stainless. Shaw is now proud to offer complete barrels directly to consumers. Specifications for Shaw AR-15 6 ARC Threaded Barrel: Manufacturer: Shaw Color: Steel Finish: Matte Fabric/Material: Stainless Steel Caliber: 6mm ARC Barrel Profile: HBAR Gas System Length: Rifle Length Gas Block Journal Size-Diameter: .750 in Threads per Inch: 5/8x24 Barrel Twist Rate: 1-7.5 Barrel Material: 416R Stainless Steel Gun Make: AR Platform Gun Model: AR-15 Condition: New Gun Type: Rifle Package Contents: Shaw AR-15 6 ARC Threaded Barrel What firearm models does the manufacturer say Shaw AR-15 6 ARC Threaded Barrel is compatible with? The manufacturer suggests that Shaw AR-15 6 ARC Threaded Barrel is compatible with AR-15Shaw AR15HBSS186ARC: AR-15 6 ARC Threaded Barrel No Flute 18in HBAR Profile 1-7.5 Twist 5/8-24 Thread Matte Stainless