The words in the list of Items you can get after typing in the name as above in the previous cheat are correct. However the items with OPT on the end are in fact variasions of rifles. SPRINGFIELDOPT is the Springfield rifle but with a scope on as OPT means optics. The same aplies to the Karibener 98k. If you look carefully you will see that the normal weapon is written down followed by the weapon with OPT on the end.