The Rock Island 3.10 is an officer-sized 1911 featuring a compact 3-inch ported barrel and a surprisingly high-capacity magazine, making it a unique option for concealed carry. While compact, its wider frame accommodates the larger magazine, and it retains the classic 1911 single-action trigger with a crisp reset. The ported barrel aims to mitigate recoil in this small .45 ACP platform.
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