wing383

想請教一吓，當個bolt向後行時，個飛機仍然索住喺個hopup座度，然後靠條飛機彈弓拉佢縮番入個bolt度，呢個相信係正常現象，但想知道佢後既原因，以we scar為例，佢隻飛機尾有o ring咁，其實係要黎做咩㗎？謝謝指點……

wing383

引用:

原帖由 cccarlos 於 14-2-2014 09:31 發表

To move the bolt backward, you have to eject something forwards.

In a real gun, gas expands as the propellant in the bullet gets ignited, pushing the bullet forward and bolt carrier backwards. A ...

I understand it now, thanks for your detailed explanation, u are so knowledgeable!!!
thank andre_ktss15 too!!!