Paul from Brownells introduces two new AR-15 barrels: a 16-inch M4 SOCOM profile barrel and a 20-inch HBAR barrel. Both are chambered in 5.56 NATO, feature a QPQ nitride finish, 4150 steel construction, magnetic particle inspection, and a 1:7 twist rate. The SOCOM barrel includes an F-marked front sight base and M4 feed ramps, while the HBAR is designed for service rifle competition.
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