>>372231723
>>372232906
>>372237649
It's fucking retarded is what it is. It'd break after firing one or two shots, the open battery port would mean that button cell would go flying in a single shot.

Things designed to be on guns are supposed to be robust and have to be built with the force of firing in mind, it's why if you try to use an airsoft red-dot on a real gun it loses zero instantly.