The Oracle Arms OA 2311 series offers a double-stack 9mm handgun with a 1911-like platform but features a linkless barrel system for easier disassembly. Key features include compatibility with Sig Sauer P320 magazines, optic-ready slides, ambidextrous controls, and a flared magwell. The Pro model boasts a 5-inch barrel and a trigger pull between 4-4.25 pounds, while compact and other variants offer different barrel lengths and price points.
This video tests the Matador Arms Mag X P320 adapter, allowing Sig P320 magazines to be used in an AR-15 lower with a 9mm upper. The adapter performed flawlessly across a wide range of ammunition weights (90-158 grains) in terms of feeding. While last-round bolt hold-open was not consistently achieved, the adapter is presented as a viable solution for training or cost-effective shooting.
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