Patent ID: 7296375

Claim:
A launcher cup for holding a projectile at the muzzle of a firearm comprising: a bell portion for holding the projectile at the muzzle of the firearm; an adapter portion adjoining said bell portion, said adapter portion for fitting over a barrel of the firearm; and a horseshoe-shaped section adjoining said adapter portion, said horseshoe-shaped section comprising: a first extension which extends below the barrel of the firearm on a first side of the firearm, said first extension having a first hole therethrough; and a second extension which extends below the barrel of the firearm on a second side of the firearm, said second extension having a second hole therethrough; wherein, when the adapter portion is fitted over the barrel of the firearm, said horseshoe-shaped portion is located such that said first and second holes are located on one side of a magazine tube ring support of the firearm, and the bell portion of the launcher cup is located on the other side of said magazine tube ring support; and wherein, when said first and second holes are positioned on said one side of said magazine tube ring support, a pin can be inserted through said first and second holes such that the launcher cup is prevented from falling off the muzzle of the firearm because said pin is stopped from moving muzzle-ward on the barrel past a certain point by the magazine tube ring support.