This video provides a preview of the Wolf A1 Piston Upper, a short-stroke, semi-automatic piston upper based on the Taiwanese T91, showcased at Big 3 East 2016. The reviewer, Jim, briefly examines the product. The testing was conducted on a Palmetto State Armory M16 lower. The video aims to introduce this new firearm component to the audience, highlighting its design and potential for firearm enthusiasts.
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