Revanchist Airsoft shows how to modify the ARMY TTI Licensed JW4 Pit Viper Hi-Capa GBB Pistol at zero cost in this video... "If you have time, this time, I will modify the ARMY PIT VIPER with everyone at zero cost. Well, a lot of people bought it and said that the trigger buckle is too hard. This time, KMW gave advice to do a small modification. I hope it is worth your time."