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LEGO MOC Assault Rifle IT REALY SHOOTS!!! by HannesLego | Rebrickable - Build with LEGO
Fun and Easy to Make Lego Technic Gun : 11 Steps - Instructables
AMMO: nine bricks WIDTH: 34.13/8.47 cm The Thriller Advanced projectile: a 4×1 brick, a plate, and a tile The retractable bow: