Our entry pipe (where rod enters the wood) has an integral skirt. The pipe body is 1" length, about 2-5/16" overall, including the skirt. Available only in brass. Use our #PIN-3/32" steel dowel pin for mounting the entry pipe on a fullstock or halfstock rifle. Or, cut off the mounting lug and install this pipe using our #SCREW-5-40-F flat head 5-40 threaded machine screw, from inside the barrel channel on later percussion halfstock rifles.