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Thread: BSA supersport Transfer port modifocations

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  1. 24-09-2024, 08:22 AM #4
    evert
    evert is offline Registered User
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    Quote Originally Posted by Shed tuner View Post
    how heavy is the piston ?
    Heres the piston I have outside of a gun:
    246 grams with piston seal and liner.
    312 grams with added FAC piston weight.

    Theres usually two 23mm steel washers in front of the piston liner, they were missing on this piston, so you can probably add a few grams with these in place.
    Last edited by evert; 24-09-2024 at 08:31 AM.
    Too many airguns!
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