An FN cold-hammer-forged AR-15 barrel in 5.56mm, 16 inches, with a mid-length gas system. FN has built barrels for US military rifles for decades, and cold hammer forging is the reason: the process work-hardens the bore and dramatically extends barrel life compared with conventional cut or button rifling. The mid-length gas system is the connoisseur's choice at 16 inches, lowering peak port pressure and smoothing the recoil impulse compared with the shorter carbine-length system.

A genuine upgrade path for a build where barrel life and reliability matter more than saving a few ounces.

In stock and ready to ship straight to your door from Dawson Defense, an Arizona-owned licensed dealer.