I would have to think that he other internals would break before he spring settled to a manageable state. They guns have the normal g&g internals with just a 140 spring to get them into the country.
I have put many of these guns through the chrono right out of he box and seen readings that range from 460 - 507 so I would think with extended use something would break before the spring settled down leaving you with having to open the gearbox or sending it to a local gun tech.
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