Enhanced bolt carrier assembly

A breech bolt assembly comprising of:

• a bolt carrier being an elongated body having a top side and a bottom side, a left side and right side, and defining a bolt section, hammer section, and end section;
• said body having an exterior and a central bore along a central bore axis;
• said bolt section having a bolt head end, a bolt body section, and a bolt tail end section;
• the bolt body section defining a bolt body channel and a gas ring channel;
• the bolt tail end defining a boat tail channel and a carrier firing pin channel;
• the bolt body channel, gas ring channel, bolt tail channel, and carrier firing pin channel aligned along the central bore axis;
• a bottom side of the bolt section defining a left groove and a right groove with a boss in between, and at least one bottom gas channel traversing from an exterior to the central bore;
• where the bottom side of the bolt section has a bottom channel traversing from an exterior of the left groove to the bolt body channel, a bottom channel traversing from the an exterior of the left groove to the bolt tail channel, a bottom channel traversing from an exterior of the right groove to the bolt body channel, and a bottom channel traversing from an exterior of the right groove to the bolt tail channel;
• a bolt;
• and
• a carrier gas key.