North Tech Defense posted a series of pictures on their Instagram of an AR-15 pistol build inspired by the Half-Life video game series. Built by Jumbo Duclayan of DUCLAYAN RIFLE WERKS, the pistol consists of an NTD NT15XCd upper, Broken Arms lower, 2111 Arms compensator, and various other components. Metal Dog Tactical also assisted with the build.
*If you’re confused about the post title, this link will explain everything.