In addition to its own expansive line of complete AR-pattern rifles, Wilson Combat also offers Match Grade Barrels chambered in 19 different cartridges for those who would rather assemble their own—including five barrel lengths for use in 9 mm Luger pistol-caliber carbines. Compatible with Colt-, JP- and Stag-style receivers, the company’s 8" offering is ideal for those undertaking an AR pistol or short-barreled-rifle build. The matte-finished 416-R stainless steel barrel is button-rifled with six grooves in a 1:10" right-hand twist, and features a hand-polished bore, a recessed crown and 5/8x24 TPI muzzle threading for use with suppressors and other accessories. MSRP: $200. Contact wilsoncombat.com.