will this work on my km4 /sistema aluminun piston V2/3 .
cylinder heads aluminun by sistema V2
laylax air nozzles
sistema 130 spring
systema piston head aluminun with bearing
spring guide by sistema
i got over 50.000 round true it wiht no problem i play twice a month i got true lost of bbs on a games .gun
is abouth 1 year old no complains besides loose screws here or there.plaming on gaining a litle more foot per second the rest is stock ecept for berrel i got laylax bore 6.3 on it will worth the money.any subjection will be apressiated.
Km4 needs tune up
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