make a barrel with Legos 3x12 in size with a 4 across bottom, cover top of barrel up until the second to last 4x2 brick you leave that one open for the loading slot on top you use a 1x2 lego the hole in the middle, then grab any type of pole or stick , then cut a rubber band and to attach it to both sides of the pistol and attach the middle to the back of the chosen pole with strong tape then add any version of grips you want to the underside of the barrel. Thats basically it!
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