It's an "early M1903" (SA Type #1. from 1905). Not only do the grooves match, but the striker shaft does not extend thru, and visible, at the back of the knob as Billard Machine's piece did.
Last edited by Tom; 01-15-2012 at 10:01.
I think both, it's a late replacement part that was mistaken as an early one.
Original package labels contain a wealth of information. According to my notes (I have no memory anymore of where or when) that one read:
Regards,3--Pin Firing Assembly
Pin Firing Assembly for U.S. Rifle M1903
Rev. 4, dated 2-28-42 to drawing B-128431
SINL Number B-003-01-00380
Code Number -- B-3-01-00380
Billard Machine & Tool Co.
PS Randy is correct in his interpretation. Sometimes when I answer questions, I add a dig at some "expert" who stated wrong information in print.
Last edited by Vi Shooter; 01-16-2012 at 10:58. Reason: Add info
I reckon the good news for me is that all of the "experts" agree that this item is USGI and not some Chicom knockoff copy from Numrich.
Best Regards to All,
Gentleman Farmer, U.S. Army - Ret.