u/Aggravating_Art7816

Hi,

Am new to the airsoft replica world. Recently i bought specna as sa-x01. as you see on the video its shooting terribly, I tried different mags and different bbs and issue is still. am sure its the hop up got stuck somehow but not sure how to fix it. its jammed and once it shoots and some it shoots two bbs at once and sometimes it dry fire (nothing comes out)