Quote:
Originally Posted by Bdot
where i got it from they didnt have the m120, and the m170 is a higher quality comes with bette parts, and its made to shoot good with a better spring, i just wanted the better parts in the m170box, with the better motor, i was just making sure for the battery
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the m170 has parts that allow it to pull that type of spring, gears and motar are designed for that specificly if you put an 120 spring you'r rate of fire will increase but those parts arn't suppose to pull weaker springs in a sense because of what above was mentioned