| 摘要 |
An ammunition cartridge comprises a combustible tubular case having a threaded open end having a uniform density of plastic resin at said end. A generally cup shaped head having a cylindrical peripheral wall provided with threads corresponding to said threaded open end is engaged with the threaded end so as to close the end. The resin is preferably a polyurethane resin and the threads are preferably 60 degree stub threads. |
