Collet chamber for weapons

A system for reducing an extraction force required for removing a spent munition cartridge case from a weapon after firing, said system comprising:

• a chamber;
• and a plurality of movable components not affixed to each other in said chamber that are configured to radially expand with a corresponding expansion of a fired munition cartridge case, wherein radial expansion of said plurality of movable components causes a rearward force on said plurality of movable components and said spent munition cartridge case wherein said chamber comprises a tapered wall, and wherein said plurality of movable components matingly align with said tapered wall, wherein said plurality of movable components align with one another but are not affixed to each other, wherein each movable component comprises a tapered outer surface comprising an angle greater than an angle of an outer surface of a pre-fired cartridge case, wherein said first end of said each movable component is positioned towards a barrel of said weapon, and wherein said second end of said each movable component is positioned towards a rear portion of said chamber.