Warning

 

Close
Confirm Action

Are you sure you wish to do this?

Cancel Confirm
AR15.COM
1/7/2013 4:02:07 PM EDT
I purchased a bolt reported to be a Colt in a "C" marked carrier.

It is marked MPE, I hadn't heard of this before just MP or MPC.

Anyone else familiar with this marking?
1/7/2013 4:18:48 PM EDT
[#1]
Advanced Ordnance Corp - they're a documented DOD contractor.
1/7/2013 4:24:11 PM EDT
[#2]
Sounds like it should be good to go then, thanks.
1/7/2013 4:29:35 PM EDT
[#3]
I've seen it discussed here before in the past, some Colt older bolts have MP then followed by a letter date code, when they ran out of letters they went back to just MPC.

Here are some other Colt bolt marking variations:

C
MPXC (X is month letter code)
ground down MPC then engraved with large C over it
MPD (Colt Canada - Diemaco)


MPF or with underlined letter F are made by FN.