APS Polymer Stippling Lower Frame with Internals For SHARK Series GBB Pistols AirsoftAPS Polymer Stippling Lower Frame with Internals For SHARK Series GBB Pistols Airsoft Made out of High Density Polymer Fiber and metal. Comes with all internals (Slide Release Catch, Magazine Release, Chassis Hammer Set, Hop Up Chamber Barrel Housing, Trigger Trigger Bar, Barrel Rail Housing). Comes with additional grip pad. Designed for APS SHARK GBB Pistol. With 20mm Under Rail. Weight 273g Original Packing