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Rubber Band Guns Made from TECHNIC Parts - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums
Small and Simple Lego Technic Rubber Band Shooter : 4 Steps - Instructables
How to Make a Lego Technic Rubber Band Gun - Semi Automatic - YouTube
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How to Make a LEGO Rubber Band Gun: 10 Steps (with Pictures)