N/A .

well lets see most replica pistols have a trigger system that is almost impossible to improve and why is that the trigger has way to much to do and the whole system is too complicated
now add the blow back to it and it get worse
most of the spring will be torsion springs vs compression springs and hard to make to lighter one and if so what would the light spring help and hurt
the type of mag that pistol uses has had a history of function problem also
no i am not a troll i am a realist
and i have no doubt you will have a good time with your project but to remanufacture a complicated pistol is not a war i would take on
i will make a note of your name and will never comment on anything you post
 
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