I also have a M14-4 with the "floating" hammer nose. The nose tip has broken off, so I ordered a nose from S&W. The one they sent me is quite a bit different than the original now-broken nose, and will not fit on my hammer. The SKU for the S&W part is 21239. My understanding is that this new nose has a spring behind it as well, whereas the original nose did not have a spring.

What part should I be asking S&W for? Anyone else have a proper hammer nose for my M14-4?

Thanks.