1911 slide with 38/9mm firing pin hole

[joelad]

I'm gathering parts for a MEU SOC pistol build. The slide I bought came with a 38 Super/9mm firing pin channel. I've read differing reasons for this. Caspsian claims it prevents primer flow, others claim it was to meet the CA DOJ drop test.

The problem is I bought a .45 ACP firing pin, and firing pin stop.

IS it worth it have it reamed out to fit the .45 FP, or should I just buy the proper FP, and FPS?

[Valorius]

I would use the firing pin and stop it was designed to use, personally.

[joelad]

Therein lies the problem. Various manufacturers use various sized .38 Super firing pins. Since I don't know who made my slide (bought it on GB from Numrich), I don't know what sized pin to buy.