Assembling a complete short-barreled AR-platform firearm requires a specific set of components. This process involves acquiring a lower receiver, which is the serialized part legally considered the firearm. To complete the build, one needs an upper receiver assembly, a pistol-length buffer tube, a brace or stock (depending on legal classification and desired configuration), a fire control group, a pistol grip, and associated small parts such as takedown pins and springs. A suitable barrel and gas system appropriate for the intended caliber and short overall length are also crucial.
The ability to customize firearms offers versatility in terms of size, weight, and intended application. Short-barreled AR variants can be advantageous in confined spaces or for individuals prioritizing maneuverability. Historically, such firearm configurations have been employed by law enforcement and military personnel where discretion and compactness are paramount. However, adherence to all applicable federal, state, and local regulations concerning firearm ownership and construction is of utmost importance.