A cannon is simply a metallic tube by using a closed conclude and an open stop. The closed stop has a small fuse gap. To load the cannon, you pour in gunpowder — a mixture of charcoal, sulfur and potassium nitrate — and after that fall within a cannonball. https://donovananwfn.goabroadblog.com/33233434/facts-about-fn-scar-17-revealed