In order to minimize noise, the barrel was drilled with holes immediately in front of the chamber to bleed off combustion gases and reduce the muzzle velocity below the speed of sound.

This was light and easily manufactured, and would prove to work exceedingly well – setting the MP5SD at the top of the heap for suppressed submachine guns. It has really not fallen from this position since, thanks to an excellent combination of noise suppression, accuracy, weight, and balance.

Standard 9x19mm 115g and 124g ammunition travel faster than the speed of sound. This results in a loud crack. This design allows one to avoid that cracking noise without purchasing specialty ammo for a suppressed 9x19 firearm, resulting in less noise when shooting.

Main Video [8:06] https://youtu.be/snDWL4PvEp8?si=

Shooting [5:25] https://youtu.be/Qyb0J0VtPeM?si=

For comparison here is how three other suppressor work. But none of these decrease the velocity of the bullet like the MP5SD does.

This design has conical baffles following a blast chamber. It’s a non user serviceable design.

This design has a tubular sleeve that screws onto the monolithic core.

This integral design features rubber seals that the bullet travels through. They close behind the bullet after it passes through sealing the gases in. This type of design allows for greater suppression at the cost of durability. The seals are only effective for a few dozen rounds.

  • pelyaEnglish
    113·
    2 years ago

    All these suppressed pistols can be replaced with a mechanical crossbow bought in your nearest hunting store, which would be cheaper, deadlier, and more reliable, and also shoot better under water. MP5 is at least automatic, something the crossbow cannot do yet.