The TTI Airsoft Stainless Steel Hammer Set is designed for AAP-01 and Marui G18C GBB Airsoft pistols. It is precision CNC machined from stainless steel, ensuring excellent durability and resistance to warping even under heavy use. The set includes the hammer, firing pin, firing pin lock, sear, rotor, and auto sear components. The MAF polishing technology used in the manufacturing process ensures smoother operation. Upgrade your airsoft pistol with this high-quality hammer set for improved performance and reliability.