Housing: 7075 Aluminum (anodized); Key Components: 440C Stainless Steel; PVD Black Coating: PVD stands for Physical Vapour Deposition. It is a hard and durable coating that is applied to external stainless components to give them a clean black color; Trigger Break: Zero Creep Technology creates a crisp break every time; Reliability: Confident in the triggers performance, even in the harshest environments