Shaw AR-10 6.5 Creedmoor Threaded Barrel Spiral Flute 20in HBAR Profile 1-8 Twist 5/8-24 Thread Matte Stainless AR10HBSSHF2065CM. 5 Creedmoor HBar Flute. Shaw machined these Rifle Barrels from 416R stainless steel with a polished finish so that they're...