Crosman 2240 Front Cap in Stainless Steel.
I have also done some that are threaded for a rod so that they can fit the  the 2250 and 2260. Please enquire if you want that type.

Photo shows the Crosman 2240 with my rear dovetail breech for more power and accuaracy. I only have one or two left for the 2250 and 2260 which does not allow fitting of the open sight. But is made for telescopic sight fitting.