Receiver dimension measurement

There is some speculation that the serial number my M1 has been removed. I will be taking it into the BTAF office sometime soon and would like to be able to give the agent some evidence that the area has or has not been tampered with.

Would someone with a micrometer be willing to mic the indicated area on one of the carbines in their collection?

If the grinding was deep enough to obliterate the serial number, the measurement on mine should be considerably less than on an unaltered piece.

http://picasaweb.google.com/PeteLuckel/Hold#

* Or better yet - dimension from a factory blue print

Never mind! BrianQ sent me pictures that settle the question.

If you feel you must meet and greet BATF&E, Schedule your visit for 31 Otober, 3507. If it is a USGI Carbine it left the factory with a serial number. If it has a manufacturer it has a serial number. If the, original number was ground off it can be replaced just as easily. If it is NOT a USGI Carbine then it must be one of aproximately 45 makers or copy cat Carbines. Some of these were made without serial numbers. Perhaps yours is a commercial Carbine without a serial number. If you feel that your Carbine must have a serial number, take any 7 digit number between zero and 8069661 and add an "X" prefix. PS: Make sure your Carbine is marked 'M1' and not 'M2' or M1 with a 2 over stamped. GCA-68 spends paragraphgs on serial numbers and who should have what. I was in Germany when GCA-68 became law. I was told by ATF (?) to stamp any firearm that I owned sans serial number to stamp it with my army serial number. (Pre, SSN.) I have a total of 7 long guns all with the same serial number, one of which is a Saginaw S'G'. Do not involve ATF until you are completly out of options. Any good machine shop can anneal the receiver and stamp it with a number. GOOD LUCK.