ASHU (Airsoft Systems Hop-Up
Unit) is a chamber for type of weapon M16/M4 is precision machined from a single piece of durable technopolymer. The main advantage of this upgrade part is detection of empty magazine and allows realistic function of bolt catch. There is no risk of shooting with empty magazine and handling with gun is similar to real weapon. To complete function of these extra tweaks is need to install ASCU electronic into the gun. With these and other changes are classic AEG
guns with electronics ASCU a little closer to more known and much more expensive Systema PTW (Professional Training Weapons). Its innovative control system also allows accurate and easy adjustment of Hop-Up
effect, which is often for gun owners M16/M4 damned process. Package includes all necessary installation components and detailed installation instructions.