JP Enterprises Supermatch Barrel With Headspaced Jp Enhanced Bolt 14.5in Light Contour Black JPSM223-14.5L8M-BT. 5" Supermatch Barrel Light Contour 416R Ss 8 Twist Button Rifled Hand Lapped Cryogenically Treated Mid-Length Gas Port Position 1/2-28Tpi...