Berroca boost top
thingiverse
Friend's DIY project was inspired by personal needs, and they thought others might benefit from it too. The clever design fits perfectly inside a Berroca Boost bottle, leaving just enough space for a 1/2 inch threaded hole suitable for airguns. Disclaimer: Use at your own risk; I'm not responsible for any consequences resulting from using this homemade device.
Download Model from thingiverse
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