there are many standard breech plug wrenches that might work for you Tom. This is a Knight, also CVA makes one like this. Personally I would call or e-mail the company, explain the problem and see if they could not send you another one out. The companies are many times very helpful..

If you have a machine shop in the area, have them take a chunk of steel bar stock and make you a couple of them. I do not think it would be all that hard to make, and might be faster. If you shot the rifle and then lost the wrench, you really need to get that plug out.