1911 Made 1918

[Vernon Morris]

Recently viewed a blue 1918 45 ACP.. The Sn. was something around 300000. The barrel was interlaced HP, I did not have the opportunity to disassemble the firearm. I believe the barrel marking is found on later 1918 and up But
below the magazine release was capital L. The L was about 3/32 in size. I was wondering if anyone has encountered this marking and what is the significance of this marking. I can not not find this in my limited resources. Any and all replies will be appreciate. Thanks

Information

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[Johnny Peppers]

Not something put on by Colt when the pistol was built. Depending on where around serial number 300000 the pistol would have either JMG, or eagle head over S with number over the magazine release.

[Vernon Morris]

Jbhnny I forgot to mention it did have JMG inspector mark above the magazine release release the L was below. I greatly appreciate your knowledge on mi8litary 45 ACP and your quick reply..Thanks again.