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GOOD DAY, I HAVE A RIFLE MARAUDER GEN 2, CALIBER 22, WITH A HUMA REGULATOR AT 2000 PSI, IT HAS A FREE FLY HAMMER (AOA), THE SPRING PRESSURE OF THE HAMMER IS AT MAXIMUM, THE AIR SCREW IS OPEN, THIS RIFLE SHOTS THE PELLET JSB FROM 18.13 GR TO 815 FT / SEC, I WANT TO INCREASE THE SPEED AT 900 FT /...