If you’ve always wanted to build your own HK416 derivative, Brownells has you covered. Their newly manufactured, assembled BRN-4 uppers are the perfect starting point. These uppers fit on a standard AR-15 lower receiver. Brownells @ TFB: [IWA 2023] New Brownells BRN-180 .300 Blackout Upper: The BRN-180SH Brownells Reintroduces the BRN-601 NEW Brownells BRN-15 Uppers […]
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