Since the silencer's chambers are at the receiving end for a majority of the hot shockwave, silencer must be fabricated from strong materials usually aluminum & titanium in order to endure shot after shot. The higher than ambient pressure gas can slowly (relatively of course) bleed into the surrounding air without the sharp decompression and the blast sound. The purpose of these chambers is to provide confined volume for the rapid expanding gas from the firing so that these gases can further expand thus reducing their pressure and temperature without emitting the shockwave from the muzzle blast from these chambers.

Those chambers are located around the barrel, in case of integral silencer or attached in front of the muzzle, in case of detachable ones. Internally, the silencer is construct from a series of chambers separates by several partitions.

The silencer, also known as suppressor or moderator, is a device which contains the muzzle blast and suppresses its sound from emitting to the surrounding environment.

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