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AR15.COM
4/16/2026 8:06:36 AM EDT
Group

I was hoping someone would be able to get me a date or an approximate date on a LE6940 that I picked up yesterday. I tried the Colt website yesterday and it showed me no love.

The lower is M4 Carbine rolled. The upper is square stamped with no C, and has the weird bolt thingy on the left side of the receiver. The barrel is cage coded, and it looks like the barrel is dated 2015 but it’s hard to read. there is not a LMT patent on the upper.

The serial is LE3872XX

Thanks
4/16/2026 3:54:08 PM EDT
[#1]
That SN seems low for a 2015 gun.. and I’m not even sure LE marked guns we’re still around in 2015… I could wrong but didn’t Colt replaced the LE with SP and/or CR prefix in that time frame?

Small or large FCG pins?
Colt switched back to small pins in 2009..
4/16/2026 4:34:06 PM EDT
[#2]
Small pins, and it came with Magpul instead of Matech for a rear sight.

Also it is actually 6 digits.... I XX the last 2.
4/16/2026 10:39:22 PM EDT
[#3]
Send me your serial number. I may be able to find out for you.
4/24/2026 3:30:35 PM EDT
[#4]
If you email the Colt Archive with the Serial Number, they will tell you the ship date.

[email protected]
4/27/2026 10:08:14 AM EDT
[Last Edit: BULLDAWG_556][Edited] [#5]
Quote History
Originally Posted By CapnMike:
If you email the Colt Archive with the Serial Number, they will tell you the ship date.

[email protected]
View Quote

Hey man thanks! The link hit me back with a email of a build date as a LE6940 in 2015. I Emailed Friday evening and they responded about 0930 Monday morning.

4/28/2026 12:40:54 PM EDT
[#6]
Outstanding

Glad it worked

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