Semi-automatic shotpistol shell pistol

A semiautomatic smooth-bore barrel shotpistol shell pistol comprising upper and lower receiver assemblies, and a smooth-bore barrel;

• said upper receiver assembly, bolt carrier assembly, and bolt contain an inertial delayed blowback assembly;
• said upper receiver assembly having a recoil spring assembly and terminal recoil bumper mounted thereon and a bolt carrier assembly slidably mounted therein;
• said recoil spring assembly comprising one standard recoil rod, one longer ejection length recoil rod to eject a spent shell, two recoil springs, each spring mounted concentrically on each recoil rod;
• said bolt carrier assembly rides and is guided by the two recoil rods via cylindrical bores along its horizontal axis, said cylindrical bores optionally penetrating the bolt face, said bolt face is adapted to engage with a cartridge chamber formed on the entry end of said barrel;
• said bolt carrier assembly containing a firing pin and a cartridge extraction claw;
• said upper assembly containing a shell ejection port opposite the ejection length recoil rod side and, optionally, a wrist brace assembly mounted above the pistol grip;
• said lower assembly comprising a pistol grip, trigger assembly, and a removable shotpistol shell magazine forward of the trigger and perpendicular to the barrel suitable for containing a multitude of shotpistol shells therein;
• said shotpistol shell pistol weighting between 5 and 10 pounds.