I have several new Colt bolts and some had a dot of white paint on them and some don't. What does the white dot desinate? Thanks, Andy
Posted: 2/13/2009 7:34:41 AM EDT
[#1]
That is a very good question and I don't think anyone will really have a really complete answer to it. I am guessing it is some type of mark that was used at some point of the bolts Mfg. or inspection.
Posted: 2/13/2009 7:38:57 AM EDT
[#2]
My 6920s bolt has this too.
I had assumed it was a dot of grease or some such.
Posted: 2/13/2009 8:04:37 AM EDT
[#3]
My 6520 had the white dot of paint. After 300rds it's gone.
Posted: 2/13/2009 8:32:53 AM EDT
[#4]
iw originally looks like a C, its just a mark to see its MPI tested at a glance
Posted: 2/13/2009 9:15:47 AM EDT
[#5]
My question is: why do some bolts have it and some don't? I have two MPC marked bolts that had it and I just put a MPKC that has it in my new LWRC piston upper.
