Latest from Checksix Airsoft... "Hi-Capa 4.3 from Tokyo Marui. Metal parts included : front and rear sight, hammer, safety, magazine catch and nickel-plated inner barrel. Near 300fps when using HFC22 TOP Gas! Metal made Dual Stainless magazine holds up to 28 rounds of BBs. Slide composed of high impact ABS plastic. Absoultely heavy and solid, shooting feels like other metal slide pistols!