NOS parts to rebuild Mark 30 and Mark 55 recoil.  Not all the parts needed to to do a complete rebuild but nearly all.  Included are 20155, Spring Retainer; 20161, Retainer; 20157, Sheave Shaft; 20164 or 28913, Plate; 11-20166, Nut; 14-20165, Tab Washer; 24-29340T2 (24-23714), Recoil Spring; 13-20160, Wave Washer.  We also have a few extra parts in this list we can sell seperately, inquire.