Broken mech box

[Cy1701]

Hi I've got a dboys PDW and half way into a game day the trigger locked up I've just taken it apart and there is a small part only 5mm aprox that stops the trigger mechanism from popping out of it's runners does anyone know where I could get a new mech box from I think it has to be for the PDW as it's ambidextrous I'll put pics for what has happened at the bottom thx any help
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