After whittling down the chopstick a little for a nice tight, yet smooth fit in relation to the bore of a pen all you need is a chopstick, rubber band and the body of a pen. For any kids or unknowing adults, this is for target practice only. Much like an actual firearm, do not point this at or towards anyone and wear eye protection anytime you decide to operate any weapon like this. This is meant to be a fun target practice activity.
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