QUIETEST Muzzle Break/Comp?

[spdldr]

The old BAR used in WWII and Korea had a simple tube about 3" long on the muzzle known as a flash hider rather than a flash suppressor. It did not reduce the noise or flash significantly from the front. However it did help confine the flash, burn more powder in a somewhat confined space and directed a lot of the noise forward.

Basically, it was a short, larger bore extension of the barrel. A Levang without the front ports. Any time the gases need to go through a smaller hole it seems to intensify the noise though.

One would eliminate any compensator effect by doing this, but why not have just a straight and unrestricted in any way tube on the end of the barrel that is approximately 1/2" bore by 2" long? Kind of like a rifle barrel with a shotgun muzzle. The bore volume would be increased by about .393 cubic inches which would be equivalent to 8" (.304 cubic inches) of the .220" bore. Thus a 16" carbine with a 2" flash hider would be close to a 24" barrel in bore volume and might sound about the same.