How does a gun silencer work? It seems the noisy part would be on the back of the gun where the hammer hits the bullet, not where the bullet exits. (I know nothing about guns)
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The gun is designed such that all the expanding gas from the gunpowder exploding is contained, except for the front of the barrel.
When the gun is fired, all that expanding gas is pushed out the front (along with the bullet). Most of the sound goes out the front with the gas.
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