I have been looking but am unable to find what (if any) spec there is on how much the firing pin should protrude from the bolt face on an A5. My feeble memory says about .050 but I can't find it anywhere. Can someone help me on this issue? Thanks

Automatic-Five or inertia A5?

Brownells

"As a general rule, [pin protrusions for] centerfire rifles and handguns usually measure between .050” and .060”. Shotguns are a little longer at .055” to .065”. Rimfire guns usually fall into the .028” to .035” range. However, inertia-type firing pins, the slanted pins in over-and-under shotguns, and many other designs will provide exceptions to these generalized guidelines."

Automatic 5, thanks Randy.