Snap Shot video of the Angel Custom "KRATOS" High Strength AEG Piston available at Evike.com... "The new KRATOS high strength AEG piston is developed from over 2 years of R&D with a mission to create the best Airsoft AEG piston at all costs. In collaboration by our lead techs at Evike Performance Shop, engineers at Angel Custom, and our friends at Umbrella Armory, the KRATOS is engineered to perfection and field tested to the limit.

Careful consideration has gone into the selection of each material used and even the angle in which the teeth are cut to get the most out of the piston in high performance tuning.

Made out of High Impact Resistant Dupont Nylon Resin and Hardened full steel teeth with Titanium Nitride coating, the piston has been stress tested to 100,000 rounds continuous with barely any sign of wear."