The G18C / AAP01 Piston Head is here to totally change the game! It's the perfect upgrade to supercharge your gun with increased gas efficiency and FPS. Ingenious in its design, this pistoned head is easy to install and requires no modifications, so you can start shooting in no time. Plus, it's made with top-quality materials for maximum durability and performance. Don't wait for another second - get ready to experience an amazing improvement in power, accuracy, and precision. With the G18C/AAP01 Piston Head you'll be unbeatable on any battlefield - go for the win!