Proof Research 130384 AR-Style Barrel 6mm Arc 20″ Rifle 1 Length Gas System 1:7.50″ Twist 4 Grooves, 5/8″-24 tpi, Stainless Stainless
$61.34
$117.16
An optimum combination of high tensile strength along with requisite toughness to withstand extreme chamber pressures encountered during firing. Excellent erosion wear characteristics and corrosion resistance.
