Hi, my name is Mike and I have a repair shop located in Tarzana California. Have two years of experience working with Airsoft Guns, and have a Google maps location if you would like to view all of the guns are repaired and serviced or upgraded. We work with such platforms as gate and Hpa‘s to maximize performance of your gun and your satisfaction with Airsoft. Call me at 310-569-6849 today to get an estimate and troubleshooting.