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how did u keep the marble stay in barrel?
Homemade 400 psi airgunby nonickname
My Marble Rifleby Mattrox
Homemade pnematic gunby tiglife
A "realistic" alcohol marble pumpgun (cheap, simple and powerful)by slum78
Intermidate air rifle with interchangable stockby ostomesto
Rube Goldberg machineby BooKooDesigns
How To Make An Air Gun From A Pool Soakerby adamtanner001
World's Most Powerful Marshmallow Gun -- How To Make Your Ownby shoemaker
pion of marblesby sergio mendes
knex marble gunby knexman
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