Now you see the piston, and the metal ring; this parts will insert into the back end of the barrel. the end cap you are seeing the from T1 test shot, not good yet.
看到活塞了吧，还有金属环(会塞入笔馆尾端)，你看到的尾塞是第一次试模，还不漂亮。
Now you see the piston, and the metal ring; this parts will insert into the back end of the barrel. the end cap you are seeing the from T1 test shot, not good yet.
看到活塞了吧，还有金属环(会塞入笔馆尾端)，你看到的尾塞是第一次试模，还不漂亮。
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