PISTOL: 4BUSH WRS MODEL 4B-15, SERIAL NUMBER 4BWRS-00614, SEMI - AUTOMATIC, 556, OTHER, CASE NOT INCLUDED, 5 Notes: The 4Bush 4B-15 is a highly customized AR-pattern pistol chambered in 5.56 NATO, built around an ultra-compact configuration and a color scheme that makes absolutely no attempt to blend into the crowd. Starting at the muzzle, its 5-inch pearlescent-finished barrel is capped by a simple aluminum thread protector rather than a conventional muzzle device and operates with a pistol-length gas system. Surrounding the barrel is a compact 3-inch two-tone handguard that keeps the front end exceptionally short and gives the pearlescent barrel plenty of visual presence. Moving rearward, the pistol uses a black upper receiver housing a matching pearlescent bolt-carrier group, with an aluminum ambidextrous charging handle completing the upper assembly. The result is a genuinely unusual micro-AR configuration that looks more like a custom showcase build than anything pulled from a standard factory catalog. The lower receiver continues the theme with a matte stainless-steel finish accented by individually colored anodized controls. A purple-anodized front pivot pin is paired with a green-anodized rear takedown pin, while the magazine-release button and corresponding magazine-catch hardware are finished in orange. A bright lime-green anodized trigger guard sits directly above a pink Hogue pistol grip, making the lower every bit as distinctive as the upper. At the rear, the pistol uses a carrier-integrated compact buffer/recoil system in place of the conventional full-length AR buffer arrangement: the shortened receiver extension contains the recoil spring, while the compact buffer component interfaces directly with the rear of the bolt-carrier assembly. This arrangement dramatically reduces the amount of receiver extension required behind the lower and completes an already exceptionally compact build.