Round knob refers to the pistol grip of the buttstock. The wood can be shaped with a round knob, or a flat knob which is abreviated RK or FK. Long tang is the top tang of the breech block frame which is the metal that comes down the top of the buttstock and screws into the wood. Usually it is 1/2" wide and about 4"-5" long. Some Superposed guns have a short tang which is about 2" shorter. Typically a round knob Superposed with a long tang is more desireable than the flat knob or short tang.
Chat with our AI personalities