The ICS CXP-16 is another great addition to ICS's Lineup of high quality and affordable airsoft guns. The body is made out of metal and the stock is made of a high quality polymer material. This rail system, similar to the 416 rail system is much more streamline than a standard rail. The top portion of the rail not only has a monolithic design but acts as a riser for mounting different types of optics. Above the rail is ICS's new, quick access CXP Sight. The pistol grip, also made out of a polymer material, is much more ergonomic than the standard m4/m16 pistol grip. The functional forward assist button acts a spring tension release to prolong the life of your internals. Internally, the CXP-16 has the same high quality features you would find in any ICS Airsoft Gun.