When hiperfire becomes hyper - HIPERFIRE Enhanced Duty Trigger 3 AR Fire-Control Group w/Duplex Trigger, 4.5/5.5lb Pull Weight

After installing into my ar pistto and shoots around 500 rounds in two occasions, everything was great and I always check and clean my gun after I fired them. On the third time wit my friend, on my very first load, I was very calm and confident in front of my friends and in my mind, I will pull the trigger then a one bang and slowly release the trigger to hear the trigger reset but instead BRRRRRRTTTT. Good thing was that I only put 5 rounds on my mag and manage to aim down the range. Then my consolation prize was embarrassment in front of my friends