Most firing pin stops are cheap, mass produced, stamped parts, but they're not Bullet Proof either.
A Bullet Proof firing pin stop is fully machined from super tough bar stock steel with great care to radius all corners resulting in a part that is many times stronger than a standard firing pin stop.
A quality firing pin stop should fit snuggly in place, therefore this part does require minor fitting to your particular pistol for a perfect fit.

Bullet Proof Firing Pin Stop, .45 ACP, 70 series. Fits: All Codes pre-80 series, .45 ACP Pkg. Includes: Firing Pin Stop - Color Blue or Stainless

Click here for Wilson Combat product fit codes.