The Apex Competition Firing Pin Kit is Intended for competition use only. The kit consists of the firing pin (17-4 heat treated stainless steel) and a reduced power firing pin return spring and was designed specifically to reduce the probability of light hits for high performance trigger action work- specifically handloads using Federal primers seated .008"-.010" in depth.
Works in current production Smith & Wesson K-Frame, L-Frame and N-Frame revolvers.