This 5 shot 7.62 caliber double action revolver is actually suppressed by its unique cartridge design.

When fired expanding gases from the gunpowder pushed a plug forward which inturn pushed the liquid solution (60% alcohol 40% glycerol). This incompressible solution pushed on the bullet to launch it out of the revolver’s barrel. The gases were contained in the cartridge preventing the typical sound report of a gunshot. And the liquid would follow the subsonic bullet out of the barrel as well.

https://guns.fandom.com/wiki/Gurevich_silent_revolver

    • What is interesting to me (in that, it hadn’t occurred to me) is that for a lot of these obscure designs, finding ammo to test fire the weapons can be extremely difficult, and the age of the ammo has a large impact on the performance. So Ian can’t get a good feel for what it was really like when the ammo was fresh.

      For example, getting your hands on G11 ammo is nearly impossible, even if you can find a gun, and it’s not like you’re going to hand-load your own.