January 6th, 2017, 10:25 AM
Fire Team Leader
Join Date: Aug 2004
Location: Virginia, USA
| | U.S. Model 1917 Firing Pin Inquiry
I recently purchased a "new" (spare) firing pin (aka "striker") for my U.S. Model of 1917 from a reputable company. Upon inspection, I notice that the tip of the spare firing pin is squared off (similar to a drive pin punch) rather than rounded. I confirmed that the diameter of the tip is .075" (i.e., proper for a M1917).
I noticed, too, that the length of the purchased spare is slightly longer than the rifle's existing firing pin. With the bolt removed from the rifle at half cock, the tip of the spare is precisely flush (no protrusion) with the bolt face. In the same half cock condition, the tip of the old, existing, firing pin is slightly below the level of the bolt face (i.e., not flush).
I have dry fired the rifle with the spare firing pin using a new A-Zoom snap cap and note the primer indent is well define, but it does not appear excessive compared to that made by the rifle's existing (used) firing pin.
The spare firing pin is marked "R" (Remington). I understand that some firing pins were marked "X" and required fitting by a field armorer. My spare firing pin, however, does not show any "X" marking.
Is my newly acquired spare firing pin one of those that requires "fitting" to be serviceable (and safe) or is it normal for a new firing pin to have a flat tip? I thought all issued firing pins had rounded tips?
What is the risk, if any, of leaving the tip flat and flush with the bolt face (at half cock) rather than rounded and slightly below flush?
Is there any increased risk for piercing cartridge primers using a flat tip firing pin when firing the rifle?
I've attached a photo of the two firing pins. The "new" spare pin is on the right. Note the squared off tip and the comparatively long protrusion.
Last edited by GoodGuy; January 6th, 2017 at 05:47 PM.
Reason: Attached Photo