[ARCHIVED THREAD] - Question about Colt bolt codes

Posted: 10/15/2006 3:09:10 PM EDT

I have bought three assembled Colt bolts so far from a vendor on the EE and they are stamped MPXC. I know what the MP and C are for, but what does the X stand for? I was talking to a "Colt expert" and he says it means they were x-rayed. Possible yes, likely, I think not. X-ray, even in bulk is very expensive, unless you own the equipment and the up-front cost on that is huge.

Does anyone know for sure?

Thanks, Andy

Posted: 10/15/2006 3:09:52 PM EDT

[#1]

It is a date code

Posted: 10/15/2006 6:53:45 PM EDT

[#2]

Is this something new then? I have some old and recent Colt Bolts and other than the ones I mentioned above, none say anything but "MPC".

Posted: 10/15/2006 7:35:47 PM EDT

[#3]

Quoted:
It is a date code

+1..let me get my BR II book..it's in it.

Posted: 10/15/2006 7:42:30 PM EDT

[#4]

The 'X' means it was manufactured in July, 1997 according to info I received from a reliable source. I have two of them.

Posted: 10/15/2006 7:51:49 PM EDT

[#5]

Quoted:
The 'X' means it was manufactured in July, 1997 according to info I received from a reliable source. I have two of them.

..got the same info from my BR II book.

Posted: 10/16/2006 3:47:19 AM EDT

[#6]

Thanks very much for the answer guys. Did they stop doing this? Like I said all of the other bolts I have are stamped or engraved "MPC" that's all.

Posted: 10/16/2006 7:01:17 AM EDT

[#7]

Quoted:
Thanks very much for the answer guys. Did they stop doing this? Like I said all of the other bolts I have are stamped or engraved "MPC" that's all.

yes they stopped in 1999 IIRC.

[ARCHIVED THREAD] - Question about Colt bolt codes

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[ARCHIVED THREAD] - Question about Colt bolt codes

[ARCHIVED THREAD] - Question about Colt bolt codes