I'm not sure if I'm understanding your question correctly, but I'll try to answer what I think your question is... The forestock at it's thickest point is around 1/8" or less preferably, on each side of the barrel, generally less. It slopes to the barrel to nearly a fine edge, not a square edge, but a pointed edge. The nose cap, once installed can be filed to the same profile. I think that's what your asking. ...Geo.