Faxon Firearms Match 6mm ARC Rifle Barrel 20inch Rifle Length 1-7.5 Twist Bead Blasted 15BARC75R20NTM-HL-5R-NP3. Manufactured in-house from gun-barrel-quality bar-stock the Match Series starts with 416-R in 5R rifling. 5R is a hybrid rifling with...