Videos tagged with Primary Weapon Systems MK116 Pro

This review of the Primary Weapon Systems MK116 Pro highlights its long-stroke piston operating system, a niche feature in the AR-15 market. The Pro model offers a more budget-friendly option compared to the flagship Mod 2, featuring a standard mil-spec lower receiver while retaining the same upper receiver and operating system. Key specifications include a 4150 chrome vanadium barrel with a 1:8 twist rate, a 3-position adjustable gas block, and M-LOK handguard. The review details disassembly and reassembly, emphasizing the unique receiver extension designed to mitigate carrier tilt.