Justin: as has been well described by Black Hand, I use copper harness rivets. Having fit the nose piece to the stock, I drill through both the cap and the wood with a clearance drill bit. I file the head of the rivet square just to make it easier to inlet in the barrel channel. Once inlet, the rivet passes through the wood and cap, is cut off and rivetted into a slight countersink in the metal cap, then filed flush. The cap is now permanent. If your inlet for the cap to the stock is not perfect, some epoxy can be used as filler, but you shouldn't need it.