Customizing a Hi-capa may be a right of passage within the airsoft hobby! Nothing makes your stock pistol run smoother than a replacement blowback unit! This Airsoft Masterpiece EDGE housing may be a CNC’d aluminum housing for your blowback components that decreases warping and flexing to stay your pistol running right. it’ll help improve your air efficiency and lower your FPS to around 300-310 FPS! The Anodized coating helps reduce wear and scratching also . If you would like to spice up the efficiency and therefore the reliability of your hi-capa, this unit are going to be the right slot in most TM and TM style hi-capa pistols.