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01-29-2002, 07:52 PM

I can not state this as fact but I do believe it is accurate and has been discussed on this forum perhaps two years ago. The firing pins started being machined with the flutes in about the mid-1920's (this could have been between about 1925 and 1929)don't know exact year but I believe it was before the 1930's.

I do know that many Lugers (esp.Police reworks) were retrofitted during this period (1925-early 30's) by having their original FP machined with the flutes....some also may have had new grooved FP interchanged and re-numbered...but I have seen many (maybe 10) with the original WWI FP's that were grooved us an up-grade.

The main reason I have understood for the flutes is to bleed gas from a punctured primer that would blow back thru the breech block FP hole and slam the FP hard into the FP retainer...often breaking the rear of the breech block. The flutes would channel this gas off and not allow the FP to function as a piston on the retainer.

I would suppose that faster lock time and less chance of "crud" cushining the fall would be added benifits.

01-29-2002, 07:52 PM	#7
BCC Guest Posts: n/a	firing pins I can not state this as fact but I do believe it is accurate and has been discussed on this forum perhaps two years ago. The firing pins started being machined with the flutes in about the mid-1920's (this could have been between about 1925 and 1929)don't know exact year but I believe it was before the 1930's. I do know that many Lugers (esp.Police reworks) were retrofitted during this period (1925-early 30's) by having their original FP machined with the flutes....some also may have had new grooved FP interchanged and re-numbered...but I have seen many (maybe 10) with the original WWI FP's that were grooved us an up-grade. The main reason I have understood for the flutes is to bleed gas from a punctured primer that would blow back thru the breech block FP hole and slam the FP hard into the FP retainer...often breaking the rear of the breech block. The flutes would channel this gas off and not allow the FP to function as a piston on the retainer. I would suppose that faster lock time and less chance of "crud" cushining the fall would be added benifits.