Howdy MM. That is an older gun. The earliest reproductions had that lever safety. They also have a short carrier (measure the mortice opening in the frame for the carrier. Modern = 1.6", older = less than 1.6"). The internals are different sizes and there are no factory nor aftermarket parts for those older guns. If it is in good shape, priced low, and you just want it for plinking, then okay. Otherwise...